/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 01:44:04,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 01:44:04,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 01:44:04,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 01:44:04,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 01:44:04,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 01:44:04,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 01:44:04,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 01:44:04,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 01:44:04,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 01:44:04,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 01:44:04,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 01:44:04,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 01:44:04,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 01:44:04,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 01:44:04,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 01:44:04,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 01:44:04,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 01:44:04,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 01:44:04,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 01:44:04,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 01:44:04,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 01:44:04,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 01:44:04,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 01:44:04,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 01:44:04,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 01:44:04,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 01:44:04,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 01:44:04,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 01:44:04,338 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 01:44:04,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 01:44:04,339 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 01:44:04,339 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 01:44:04,340 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 01:44:04,340 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 01:44:04,340 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 01:44:04,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 01:44:04,341 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 01:44:04,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 01:44:04,342 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 01:44:04,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 01:44:04,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:44:04,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 01:44:04,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 01:44:04,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 01:44:04,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 01:44:04,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 01:44:04,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 01:44:04,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 01:44:04,345 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 01:44:04,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 01:44:04,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 01:44:04,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 01:44:04,611 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 01:44:04,612 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 01:44:04,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-01-18 01:44:04,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53e98fba/001f4bfa4ced43558dd9fa43a47870aa/FLAG85729a17a [2022-01-18 01:44:05,114 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 01:44:05,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-01-18 01:44:05,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53e98fba/001f4bfa4ced43558dd9fa43a47870aa/FLAG85729a17a [2022-01-18 01:44:05,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53e98fba/001f4bfa4ced43558dd9fa43a47870aa [2022-01-18 01:44:05,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 01:44:05,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 01:44:05,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 01:44:05,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 01:44:05,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 01:44:05,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1444fb85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05, skipping insertion in model container [2022-01-18 01:44:05,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 01:44:05,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 01:44:05,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2022-01-18 01:44:05,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:44:05,386 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 01:44:05,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c[2476,2489] [2022-01-18 01:44:05,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 01:44:05,427 INFO L208 MainTranslator]: Completed translation [2022-01-18 01:44:05,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05 WrapperNode [2022-01-18 01:44:05,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 01:44:05,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 01:44:05,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 01:44:05,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 01:44:05,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,454 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-01-18 01:44:05,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 01:44:05,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 01:44:05,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 01:44:05,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 01:44:05,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 01:44:05,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 01:44:05,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 01:44:05,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 01:44:05,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (1/1) ... [2022-01-18 01:44:05,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 01:44:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:44:05,519 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 01:44:05,521 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 01:44:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 01:44:05,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 01:44:05,552 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 01:44:05,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 01:44:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 01:44:05,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 01:44:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 01:44:05,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 01:44:05,554 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 01:44:05,614 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 01:44:05,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 01:44:05,749 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 01:44:05,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 01:44:05,785 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 01:44:05,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:44:05 BoogieIcfgContainer [2022-01-18 01:44:05,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 01:44:05,789 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 01:44:05,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 01:44:05,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 01:44:05,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 01:44:05" (1/3) ... [2022-01-18 01:44:05,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765673e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:44:05, skipping insertion in model container [2022-01-18 01:44:05,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 01:44:05" (2/3) ... [2022-01-18 01:44:05,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765673e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 01:44:05, skipping insertion in model container [2022-01-18 01:44:05,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 01:44:05" (3/3) ... [2022-01-18 01:44:05,795 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2022-01-18 01:44:05,799 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 01:44:05,800 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 01:44:05,800 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 01:44:05,800 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 01:44:05,831 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,832 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,833 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,833 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,833 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,834 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,834 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,835 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,836 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,837 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,838 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,838 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,839 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,839 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,840 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,840 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,840 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,843 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,843 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,847 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,848 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,849 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,849 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 01:44:05,853 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 01:44:05,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 01:44:05,899 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 01:44:05,899 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 01:44:05,917 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-01-18 01:44:05,977 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 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 01:44:05,980 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 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 01:44:05,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-18 01:44:05,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:05,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:44:05,999 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:06,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:06,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1436780155, now seen corresponding path program 1 times [2022-01-18 01:44:06,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:06,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147167406] [2022-01-18 01:44:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:06,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:06,168 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 01:44:06,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:06,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147167406] [2022-01-18 01:44:06,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147167406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:44:06,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:44:06,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 01:44:06,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688406715] [2022-01-18 01:44:06,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:44:06,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 01:44:06,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 01:44:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:44:06,200 INFO L87 Difference]: Start difference. First operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 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 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 01:44:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:44:06,240 INFO L93 Difference]: Finished difference Result 336 states and 794 transitions. [2022-01-18 01:44:06,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 01:44:06,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 64 [2022-01-18 01:44:06,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:44:06,262 INFO L225 Difference]: With dead ends: 336 [2022-01-18 01:44:06,262 INFO L226 Difference]: Without dead ends: 334 [2022-01-18 01:44:06,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 01:44:06,267 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 01:44:06,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 01:44:06,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-18 01:44:06,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-01-18 01:44:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.3783783783783785) internal successors, (792), 333 states have internal predecessors, (792), 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 01:44:06,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 792 transitions. [2022-01-18 01:44:06,332 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 792 transitions. Word has length 64 [2022-01-18 01:44:06,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:44:06,333 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 792 transitions. [2022-01-18 01:44:06,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 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 01:44:06,334 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 792 transitions. [2022-01-18 01:44:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-18 01:44:06,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:06,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:44:06,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 01:44:06,338 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:06,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:06,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1759613989, now seen corresponding path program 1 times [2022-01-18 01:44:06,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:06,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244500750] [2022-01-18 01:44:06,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:06,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:06,676 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 01:44:06,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:06,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244500750] [2022-01-18 01:44:06,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244500750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:44:06,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:44:06,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:44:06,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742248890] [2022-01-18 01:44:06,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:44:06,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:44:06,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:44:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:44:06,680 INFO L87 Difference]: Start difference. First operand 334 states and 792 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 01:44:06,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:44:06,822 INFO L93 Difference]: Finished difference Result 481 states and 1212 transitions. [2022-01-18 01:44:06,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:44:06,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 64 [2022-01-18 01:44:06,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:44:06,829 INFO L225 Difference]: With dead ends: 481 [2022-01-18 01:44:06,829 INFO L226 Difference]: Without dead ends: 433 [2022-01-18 01:44:06,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 01:44:06,831 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:44:06,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:44:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-18 01:44:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 377. [2022-01-18 01:44:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.4627659574468086) internal successors, (926), 376 states have internal predecessors, (926), 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 01:44:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 926 transitions. [2022-01-18 01:44:06,855 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 926 transitions. Word has length 64 [2022-01-18 01:44:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:44:06,856 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 926 transitions. [2022-01-18 01:44:06,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 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 01:44:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 926 transitions. [2022-01-18 01:44:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-18 01:44:06,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:06,866 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, 1, 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 01:44:06,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 01:44:06,867 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:06,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:06,868 INFO L85 PathProgramCache]: Analyzing trace with hash -142333394, now seen corresponding path program 1 times [2022-01-18 01:44:06,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:06,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185332953] [2022-01-18 01:44:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:06,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:07,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:07,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185332953] [2022-01-18 01:44:07,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185332953] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:44:07,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610700192] [2022-01-18 01:44:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:07,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:44:07,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:44:07,673 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 01:44:07,678 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 01:44:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:07,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 01:44:07,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:44:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:08,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:44:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:10,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610700192] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 01:44:10,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 01:44:10,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 15] total 31 [2022-01-18 01:44:10,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344589780] [2022-01-18 01:44:10,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:44:10,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 01:44:10,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 01:44:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-01-18 01:44:10,275 INFO L87 Difference]: Start difference. First operand 377 states and 926 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 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 01:44:12,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:44:12,182 INFO L93 Difference]: Finished difference Result 1227 states and 3160 transitions. [2022-01-18 01:44:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 01:44:12,183 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 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 68 [2022-01-18 01:44:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:44:12,189 INFO L225 Difference]: With dead ends: 1227 [2022-01-18 01:44:12,189 INFO L226 Difference]: Without dead ends: 1116 [2022-01-18 01:44:12,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 119 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=433, Invalid=1823, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:44:12,191 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 411 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:44:12,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1096 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 78 Unchecked, 0.5s Time] [2022-01-18 01:44:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-18 01:44:12,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 445. [2022-01-18 01:44:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.515765765765766) internal successors, (1117), 444 states have internal predecessors, (1117), 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 01:44:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1117 transitions. [2022-01-18 01:44:12,217 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1117 transitions. Word has length 68 [2022-01-18 01:44:12,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:44:12,217 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1117 transitions. [2022-01-18 01:44:12,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 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 01:44:12,218 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1117 transitions. [2022-01-18 01:44:12,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-18 01:44:12,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:12,220 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, 1, 1, 1, 1, 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 01:44:12,247 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 01:44:12,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:44:12,436 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:12,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:12,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1846595665, now seen corresponding path program 1 times [2022-01-18 01:44:12,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:12,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128635993] [2022-01-18 01:44:12,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:12,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:13,039 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 01:44:13,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:13,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128635993] [2022-01-18 01:44:13,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128635993] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:44:13,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604753946] [2022-01-18 01:44:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:13,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:44:13,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:44:13,044 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 01:44:13,070 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 01:44:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:13,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 01:44:13,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:44:14,362 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 01:44:14,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:44:17,121 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 01:44:17,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604753946] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:44:17,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:44:17,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 36 [2022-01-18 01:44:17,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927864556] [2022-01-18 01:44:17,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:44:17,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 01:44:17,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 01:44:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 01:44:17,124 INFO L87 Difference]: Start difference. First operand 445 states and 1117 transitions. Second operand has 36 states, 36 states have (on average 4.194444444444445) internal successors, (151), 36 states have internal predecessors, (151), 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 01:44:33,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:44:33,829 INFO L93 Difference]: Finished difference Result 4627 states and 11725 transitions. [2022-01-18 01:44:33,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 01:44:33,829 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.194444444444445) internal successors, (151), 36 states have internal predecessors, (151), 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 71 [2022-01-18 01:44:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:44:33,846 INFO L225 Difference]: With dead ends: 4627 [2022-01-18 01:44:33,846 INFO L226 Difference]: Without dead ends: 3133 [2022-01-18 01:44:33,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5035 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=2288, Invalid=12718, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 01:44:33,851 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 2244 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-18 01:44:33,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2244 Valid, 2100 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1078 Invalid, 0 Unknown, 1 Unchecked, 4.8s Time] [2022-01-18 01:44:33,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-18 01:44:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 867. [2022-01-18 01:44:33,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6547344110854505) internal successors, (2299), 866 states have internal predecessors, (2299), 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 01:44:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2299 transitions. [2022-01-18 01:44:33,923 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2299 transitions. Word has length 71 [2022-01-18 01:44:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:44:33,924 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2299 transitions. [2022-01-18 01:44:33,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.194444444444445) internal successors, (151), 36 states have internal predecessors, (151), 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 01:44:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2299 transitions. [2022-01-18 01:44:33,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 01:44:33,927 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:33,927 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:44:33,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 01:44:34,132 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,SelfDestructingSolverStorable3 [2022-01-18 01:44:34,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:34,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:34,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1244300115, now seen corresponding path program 2 times [2022-01-18 01:44:34,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:34,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865859033] [2022-01-18 01:44:34,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:34,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:34,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:34,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865859033] [2022-01-18 01:44:34,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865859033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 01:44:34,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 01:44:34,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 01:44:34,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9148864] [2022-01-18 01:44:34,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 01:44:34,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 01:44:34,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:34,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 01:44:34,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 01:44:34,218 INFO L87 Difference]: Start difference. First operand 867 states and 2299 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 01:44:34,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:44:34,340 INFO L93 Difference]: Finished difference Result 1279 states and 3412 transitions. [2022-01-18 01:44:34,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 01:44:34,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 72 [2022-01-18 01:44:34,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:44:34,348 INFO L225 Difference]: With dead ends: 1279 [2022-01-18 01:44:34,349 INFO L226 Difference]: Without dead ends: 1279 [2022-01-18 01:44:34,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 01:44:34,350 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 69 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:44:34,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 273 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 01:44:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-01-18 01:44:34,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 759. [2022-01-18 01:44:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.604221635883905) internal successors, (1974), 758 states have internal predecessors, (1974), 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 01:44:34,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1974 transitions. [2022-01-18 01:44:34,373 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1974 transitions. Word has length 72 [2022-01-18 01:44:34,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:44:34,373 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1974 transitions. [2022-01-18 01:44:34,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 01:44:34,373 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1974 transitions. [2022-01-18 01:44:34,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 01:44:34,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:34,376 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 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 01:44:34,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 01:44:34,376 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:34,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:34,377 INFO L85 PathProgramCache]: Analyzing trace with hash 955660810, now seen corresponding path program 2 times [2022-01-18 01:44:34,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:34,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085424245] [2022-01-18 01:44:34,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:34,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:34,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:35,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085424245] [2022-01-18 01:44:35,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085424245] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:44:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460993290] [2022-01-18 01:44:35,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:44:35,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:44:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:44:35,238 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 01:44:35,238 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 01:44:35,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:44:35,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:44:35,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 01:44:35,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:44:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:36,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:44:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:38,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460993290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:44:38,432 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:44:38,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 35 [2022-01-18 01:44:38,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966770288] [2022-01-18 01:44:38,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:44:38,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 01:44:38,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 01:44:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 01:44:38,434 INFO L87 Difference]: Start difference. First operand 759 states and 1974 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 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 01:44:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:44:51,266 INFO L93 Difference]: Finished difference Result 3561 states and 9282 transitions. [2022-01-18 01:44:51,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 01:44:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 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 74 [2022-01-18 01:44:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:44:51,279 INFO L225 Difference]: With dead ends: 3561 [2022-01-18 01:44:51,279 INFO L226 Difference]: Without dead ends: 2976 [2022-01-18 01:44:51,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2852 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1486, Invalid=7826, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 01:44:51,282 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1375 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:44:51,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 2922 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 01:44:51,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2022-01-18 01:44:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1047. [2022-01-18 01:44:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.6873804971319313) internal successors, (2811), 1046 states have internal predecessors, (2811), 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 01:44:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2811 transitions. [2022-01-18 01:44:51,319 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2811 transitions. Word has length 74 [2022-01-18 01:44:51,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:44:51,320 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2811 transitions. [2022-01-18 01:44:51,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 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 01:44:51,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2811 transitions. [2022-01-18 01:44:51,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 01:44:51,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:44:51,323 INFO L514 BasicCegarLoop]: trace histogram [2, 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, 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 01:44:51,345 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 01:44:51,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:44:51,540 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:44:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:44:51,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2090126194, now seen corresponding path program 3 times [2022-01-18 01:44:51,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:44:51,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37478537] [2022-01-18 01:44:51,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:44:51,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:44:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:44:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:52,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:44:52,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37478537] [2022-01-18 01:44:52,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37478537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:44:52,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273367096] [2022-01-18 01:44:52,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:44:52,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:44:52,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:44:52,313 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 01:44:52,314 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 01:44:52,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:44:52,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:44:52,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 01:44:52,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:44:53,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:53,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:44:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:44:58,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273367096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:44:58,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:44:58,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-01-18 01:44:58,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956448750] [2022-01-18 01:44:58,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:44:58,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 01:44:58,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:44:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 01:44:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 01:44:58,937 INFO L87 Difference]: Start difference. First operand 1047 states and 2811 transitions. Second operand has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 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 01:45:34,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:45:34,085 INFO L93 Difference]: Finished difference Result 3150 states and 8410 transitions. [2022-01-18 01:45:34,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 01:45:34,085 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 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 74 [2022-01-18 01:45:34,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:45:34,097 INFO L225 Difference]: With dead ends: 3150 [2022-01-18 01:45:34,097 INFO L226 Difference]: Without dead ends: 2691 [2022-01-18 01:45:34,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 28.8s TimeCoverageRelationStatistics Valid=1552, Invalid=9790, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 01:45:34,100 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 1123 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-01-18 01:45:34,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2499 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1373 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-01-18 01:45:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2022-01-18 01:45:34,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 1187. [2022-01-18 01:45:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.725126475548061) internal successors, (3232), 1186 states have internal predecessors, (3232), 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 01:45:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3232 transitions. [2022-01-18 01:45:34,139 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3232 transitions. Word has length 74 [2022-01-18 01:45:34,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:45:34,139 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3232 transitions. [2022-01-18 01:45:34,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 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 01:45:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3232 transitions. [2022-01-18 01:45:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 01:45:34,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:45:34,143 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 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 01:45:34,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-01-18 01:45:34,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:45:34,368 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:45:34,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:45:34,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1339691624, now seen corresponding path program 3 times [2022-01-18 01:45:34,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:45:34,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431847539] [2022-01-18 01:45:34,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:45:34,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:45:34,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:45:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:45:35,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:45:35,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431847539] [2022-01-18 01:45:35,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431847539] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:45:35,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736020422] [2022-01-18 01:45:35,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:45:35,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:45:35,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:45:35,273 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 01:45:35,274 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 01:45:35,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 01:45:35,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:45:35,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-18 01:45:35,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:45:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:45:36,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:45:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:45:38,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736020422] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:45:38,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:45:38,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 19] total 48 [2022-01-18 01:45:38,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539369999] [2022-01-18 01:45:38,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:45:38,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 01:45:38,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:45:38,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 01:45:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1856, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:45:38,194 INFO L87 Difference]: Start difference. First operand 1187 states and 3232 transitions. Second operand has 48 states, 48 states have (on average 3.7916666666666665) internal successors, (182), 48 states have internal predecessors, (182), 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 01:45:45,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 01:46:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:46:18,508 INFO L93 Difference]: Finished difference Result 3835 states and 10307 transitions. [2022-01-18 01:46:18,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2022-01-18 01:46:18,508 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.7916666666666665) internal successors, (182), 48 states have internal predecessors, (182), 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 76 [2022-01-18 01:46:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:46:18,519 INFO L225 Difference]: With dead ends: 3835 [2022-01-18 01:46:18,519 INFO L226 Difference]: Without dead ends: 3421 [2022-01-18 01:46:18,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9167 ImplicationChecksByTransitivity, 32.6s TimeCoverageRelationStatistics Valid=4952, Invalid=22108, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 01:46:18,523 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 1744 mSDsluCounter, 5071 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-01-18 01:46:18,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1744 Valid, 5027 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 3083 Invalid, 0 Unknown, 147 Unchecked, 9.3s Time] [2022-01-18 01:46:18,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2022-01-18 01:46:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 1331. [2022-01-18 01:46:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 2.7518796992481205) internal successors, (3660), 1330 states have internal predecessors, (3660), 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 01:46:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 3660 transitions. [2022-01-18 01:46:18,565 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 3660 transitions. Word has length 76 [2022-01-18 01:46:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:46:18,565 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 3660 transitions. [2022-01-18 01:46:18,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.7916666666666665) internal successors, (182), 48 states have internal predecessors, (182), 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 01:46:18,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 3660 transitions. [2022-01-18 01:46:18,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 01:46:18,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:46:18,569 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:46:18,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 01:46:18,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:46:18,786 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:46:18,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:46:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1260039537, now seen corresponding path program 4 times [2022-01-18 01:46:18,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:46:18,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611923348] [2022-01-18 01:46:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:46:18,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:46:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:46:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:46:19,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:46:19,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611923348] [2022-01-18 01:46:19,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611923348] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:46:19,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995070798] [2022-01-18 01:46:19,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:46:19,910 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:46:19,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:46:19,911 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:46:19,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 01:46:20,077 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:46:20,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:46:20,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 01:46:20,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:46:21,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:46:21,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:46:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:46:31,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995070798] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:46:31,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:46:31,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-01-18 01:46:31,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717774488] [2022-01-18 01:46:31,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:46:31,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 01:46:31,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:46:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 01:46:31,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 01:46:31,780 INFO L87 Difference]: Start difference. First operand 1331 states and 3660 transitions. Second operand has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 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 01:47:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:47:44,162 INFO L93 Difference]: Finished difference Result 4441 states and 11738 transitions. [2022-01-18 01:47:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 01:47:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 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 77 [2022-01-18 01:47:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:47:44,175 INFO L225 Difference]: With dead ends: 4441 [2022-01-18 01:47:44,176 INFO L226 Difference]: Without dead ends: 3472 [2022-01-18 01:47:44,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4070 ImplicationChecksByTransitivity, 70.4s TimeCoverageRelationStatistics Valid=1758, Invalid=11350, Unknown=2, NotChecked=0, Total=13110 [2022-01-18 01:47:44,177 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 1186 mSDsluCounter, 4243 mSDsCounter, 0 mSdLazyCounter, 2163 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 4117 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-01-18 01:47:44,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 4117 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2163 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-01-18 01:47:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2022-01-18 01:47:44,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 1675. [2022-01-18 01:47:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 2.792712066905615) internal successors, (4675), 1674 states have internal predecessors, (4675), 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 01:47:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 4675 transitions. [2022-01-18 01:47:44,225 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 4675 transitions. Word has length 77 [2022-01-18 01:47:44,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:47:44,225 INFO L470 AbstractCegarLoop]: Abstraction has 1675 states and 4675 transitions. [2022-01-18 01:47:44,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 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 01:47:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 4675 transitions. [2022-01-18 01:47:44,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 01:47:44,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:47:44,230 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:47:44,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 01:47:44,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:47:44,453 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:47:44,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:47:44,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1044628751, now seen corresponding path program 5 times [2022-01-18 01:47:44,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:47:44,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648870784] [2022-01-18 01:47:44,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:47:44,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:47:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:47:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:46,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:47:46,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648870784] [2022-01-18 01:47:46,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648870784] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:47:46,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442296053] [2022-01-18 01:47:46,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 01:47:46,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:47:46,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:47:46,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:47:46,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 01:47:46,592 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 01:47:46,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:47:46,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 01:47:46,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:47:48,607 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:48,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:47:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:47:51,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442296053] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:47:51,456 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:47:51,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 19] total 44 [2022-01-18 01:47:51,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005921618] [2022-01-18 01:47:51,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:47:51,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 01:47:51,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:47:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 01:47:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1554, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 01:47:51,458 INFO L87 Difference]: Start difference. First operand 1675 states and 4675 transitions. Second operand has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 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 01:48:31,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:48:31,045 INFO L93 Difference]: Finished difference Result 4824 states and 12912 transitions. [2022-01-18 01:48:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 01:48:31,045 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 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 77 [2022-01-18 01:48:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:48:31,054 INFO L225 Difference]: With dead ends: 4824 [2022-01-18 01:48:31,054 INFO L226 Difference]: Without dead ends: 3744 [2022-01-18 01:48:31,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5740 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=2626, Invalid=15464, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 01:48:31,056 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 1842 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1842 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-01-18 01:48:31,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1842 Valid, 3781 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-01-18 01:48:31,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2022-01-18 01:48:31,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2015. [2022-01-18 01:48:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2014 states have (on average 2.7934458788480634) internal successors, (5626), 2014 states have internal predecessors, (5626), 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 01:48:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 5626 transitions. [2022-01-18 01:48:31,108 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 5626 transitions. Word has length 77 [2022-01-18 01:48:31,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:48:31,108 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 5626 transitions. [2022-01-18 01:48:31,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 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 01:48:31,108 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 5626 transitions. [2022-01-18 01:48:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 01:48:31,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:48:31,113 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 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 01:48:31,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 01:48:31,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:48:31,336 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:48:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:48:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1503926061, now seen corresponding path program 6 times [2022-01-18 01:48:31,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:48:31,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171922388] [2022-01-18 01:48:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:48:31,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:48:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:48:31,935 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:31,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:48:31,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171922388] [2022-01-18 01:48:31,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171922388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:48:31,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432674042] [2022-01-18 01:48:31,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 01:48:31,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:48:31,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:48:31,937 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:48:31,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 01:48:32,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 01:48:32,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:48:32,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 01:48:32,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:48:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:34,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:48:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:48:36,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432674042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:48:36,513 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:48:36,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 19] total 47 [2022-01-18 01:48:36,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151741742] [2022-01-18 01:48:36,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:48:36,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 01:48:36,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:48:36,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 01:48:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1814, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 01:48:36,515 INFO L87 Difference]: Start difference. First operand 2015 states and 5626 transitions. Second operand has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 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 01:49:20,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:49:20,472 INFO L93 Difference]: Finished difference Result 5509 states and 14778 transitions. [2022-01-18 01:49:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 01:49:20,472 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 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 77 [2022-01-18 01:49:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:49:20,482 INFO L225 Difference]: With dead ends: 5509 [2022-01-18 01:49:20,482 INFO L226 Difference]: Without dead ends: 4591 [2022-01-18 01:49:20,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=2686, Invalid=17906, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 01:49:20,485 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 2216 mSDsluCounter, 4050 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 3989 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:49:20,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 3989 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-01-18 01:49:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2022-01-18 01:49:20,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 2267. [2022-01-18 01:49:20,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 2.820388349514563) internal successors, (6391), 2266 states have internal predecessors, (6391), 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 01:49:20,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6391 transitions. [2022-01-18 01:49:20,547 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6391 transitions. Word has length 77 [2022-01-18 01:49:20,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:49:20,547 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6391 transitions. [2022-01-18 01:49:20,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 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 01:49:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6391 transitions. [2022-01-18 01:49:20,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 01:49:20,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:49:20,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:49:20,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 01:49:20,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 01:49:20,759 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:49:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:49:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1799553041, now seen corresponding path program 7 times [2022-01-18 01:49:20,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:49:20,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302943270] [2022-01-18 01:49:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:49:20,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:49:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:49:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:49:21,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:49:21,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302943270] [2022-01-18 01:49:21,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302943270] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:49:21,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879069473] [2022-01-18 01:49:21,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 01:49:21,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:49:21,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:49:21,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:49:21,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 01:49:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:49:21,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 01:49:21,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:49:22,737 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:49:22,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:49:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:49:26,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879069473] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:49:26,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:49:26,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 21] total 48 [2022-01-18 01:49:26,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166798335] [2022-01-18 01:49:26,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:49:26,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 01:49:26,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:49:26,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 01:49:26,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1908, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 01:49:26,510 INFO L87 Difference]: Start difference. First operand 2267 states and 6391 transitions. Second operand has 48 states, 48 states have (on average 3.9166666666666665) internal successors, (188), 48 states have internal predecessors, (188), 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 01:51:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:51:19,251 INFO L93 Difference]: Finished difference Result 11050 states and 29057 transitions. [2022-01-18 01:51:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-01-18 01:51:19,252 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.9166666666666665) internal successors, (188), 48 states have internal predecessors, (188), 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 01:51:19,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:51:19,272 INFO L225 Difference]: With dead ends: 11050 [2022-01-18 01:51:19,272 INFO L226 Difference]: Without dead ends: 9550 [2022-01-18 01:51:19,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30804 ImplicationChecksByTransitivity, 101.3s TimeCoverageRelationStatistics Valid=8661, Invalid=67238, Unknown=1, NotChecked=0, Total=75900 [2022-01-18 01:51:19,277 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 3630 mSDsluCounter, 5947 mSDsCounter, 0 mSdLazyCounter, 3640 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3630 SdHoareTripleChecker+Valid, 5831 SdHoareTripleChecker+Invalid, 4326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 3640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-01-18 01:51:19,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3630 Valid, 5831 Invalid, 4326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 3640 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-01-18 01:51:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2022-01-18 01:51:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 3006. [2022-01-18 01:51:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3005 states have (on average 2.91414309484193) internal successors, (8757), 3005 states have internal predecessors, (8757), 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 01:51:19,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 8757 transitions. [2022-01-18 01:51:19,381 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 8757 transitions. Word has length 78 [2022-01-18 01:51:19,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:51:19,382 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 8757 transitions. [2022-01-18 01:51:19,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.9166666666666665) internal successors, (188), 48 states have internal predecessors, (188), 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 01:51:19,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 8757 transitions. [2022-01-18 01:51:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 01:51:19,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:51:19,391 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:51:19,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 01:51:19,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:51:19,616 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:51:19,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:51:19,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1217995345, now seen corresponding path program 8 times [2022-01-18 01:51:19,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:51:19,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916183968] [2022-01-18 01:51:19,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:51:19,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:51:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:51:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:51:20,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:51:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916183968] [2022-01-18 01:51:20,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916183968] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:51:20,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481092600] [2022-01-18 01:51:20,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 01:51:20,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:51:20,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:51:20,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:51:20,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 01:51:20,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 01:51:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:51:20,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 01:51:20,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:51:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:51:21,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:51:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:51:24,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481092600] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:51:24,916 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:51:24,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 01:51:24,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349003928] [2022-01-18 01:51:24,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:51:24,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 01:51:24,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:51:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 01:51:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1700, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 01:51:24,917 INFO L87 Difference]: Start difference. First operand 3006 states and 8757 transitions. Second operand has 45 states, 45 states have (on average 3.5555555555555554) internal successors, (160), 45 states have internal predecessors, (160), 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 01:51:35,484 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 01:52:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:52:44,353 INFO L93 Difference]: Finished difference Result 8745 states and 23860 transitions. [2022-01-18 01:52:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-01-18 01:52:44,354 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.5555555555555554) internal successors, (160), 45 states have internal predecessors, (160), 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 01:52:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:52:44,371 INFO L225 Difference]: With dead ends: 8745 [2022-01-18 01:52:44,372 INFO L226 Difference]: Without dead ends: 7599 [2022-01-18 01:52:44,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15427 ImplicationChecksByTransitivity, 65.2s TimeCoverageRelationStatistics Valid=5941, Invalid=36700, Unknown=1, NotChecked=0, Total=42642 [2022-01-18 01:52:44,375 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2028 mSDsluCounter, 5782 mSDsCounter, 0 mSdLazyCounter, 3117 mSolverCounterSat, 235 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 5620 SdHoareTripleChecker+Invalid, 3353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 3117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-01-18 01:52:44,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2028 Valid, 5620 Invalid, 3353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 3117 Invalid, 1 Unknown, 0 Unchecked, 16.6s Time] [2022-01-18 01:52:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7599 states. [2022-01-18 01:52:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7599 to 3390. [2022-01-18 01:52:44,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3389 states have (on average 2.93803481853054) internal successors, (9957), 3389 states have internal predecessors, (9957), 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 01:52:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 9957 transitions. [2022-01-18 01:52:44,472 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 9957 transitions. Word has length 78 [2022-01-18 01:52:44,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:52:44,472 INFO L470 AbstractCegarLoop]: Abstraction has 3390 states and 9957 transitions. [2022-01-18 01:52:44,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.5555555555555554) internal successors, (160), 45 states have internal predecessors, (160), 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 01:52:44,473 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 9957 transitions. [2022-01-18 01:52:44,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 01:52:44,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:52:44,480 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:52:44,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 01:52:44,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 01:52:44,684 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:52:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:52:44,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1762627179, now seen corresponding path program 9 times [2022-01-18 01:52:44,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:52:44,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163679351] [2022-01-18 01:52:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:52:44,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:52:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:52:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:44,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:52:44,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163679351] [2022-01-18 01:52:44,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163679351] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:52:44,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866202441] [2022-01-18 01:52:44,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 01:52:44,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:52:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:52:44,912 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:52:44,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 01:52:45,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 01:52:45,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:52:45,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 01:52:45,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:52:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:45,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:52:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:46,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866202441] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:52:46,231 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:52:46,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 27 [2022-01-18 01:52:46,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402990380] [2022-01-18 01:52:46,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:52:46,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 01:52:46,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:52:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 01:52:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-01-18 01:52:46,232 INFO L87 Difference]: Start difference. First operand 3390 states and 9957 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 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 01:52:47,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 01:52:47,997 INFO L93 Difference]: Finished difference Result 7769 states and 21823 transitions. [2022-01-18 01:52:47,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 01:52:47,998 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 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 01:52:47,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 01:52:48,010 INFO L225 Difference]: With dead ends: 7769 [2022-01-18 01:52:48,011 INFO L226 Difference]: Without dead ends: 7769 [2022-01-18 01:52:48,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=441, Invalid=2639, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 01:52:48,012 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 822 mSDsluCounter, 2386 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2416 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:52:48,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 2416 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1074 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 01:52:48,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7769 states. [2022-01-18 01:52:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7769 to 4130. [2022-01-18 01:52:48,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 4129 states have (on average 2.9769920077500607) internal successors, (12292), 4129 states have internal predecessors, (12292), 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 01:52:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 12292 transitions. [2022-01-18 01:52:48,109 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 12292 transitions. Word has length 78 [2022-01-18 01:52:48,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 01:52:48,110 INFO L470 AbstractCegarLoop]: Abstraction has 4130 states and 12292 transitions. [2022-01-18 01:52:48,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 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 01:52:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 12292 transitions. [2022-01-18 01:52:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 01:52:48,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 01:52:48,138 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 01:52:48,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 01:52:48,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 01:52:48,351 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 01:52:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 01:52:48,351 INFO L85 PathProgramCache]: Analyzing trace with hash 63050411, now seen corresponding path program 10 times [2022-01-18 01:52:48,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 01:52:48,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375398183] [2022-01-18 01:52:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 01:52:48,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 01:52:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 01:52:49,203 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:49,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 01:52:49,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375398183] [2022-01-18 01:52:49,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375398183] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 01:52:49,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932942548] [2022-01-18 01:52:49,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 01:52:49,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 01:52:49,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 01:52:49,205 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 01:52:49,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 01:52:49,334 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 01:52:49,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 01:52:49,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 01:52:49,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 01:52:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:51,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 01:52:58,430 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 01:52:58,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932942548] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 01:52:58,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 01:52:58,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 22] total 51 [2022-01-18 01:52:58,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055523382] [2022-01-18 01:52:58,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 01:52:58,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 01:52:58,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 01:52:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 01:52:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2194, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 01:52:58,432 INFO L87 Difference]: Start difference. First operand 4130 states and 12292 transitions. Second operand has 51 states, 51 states have (on average 3.549019607843137) internal successors, (181), 51 states have internal predecessors, (181), 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 01:54:59,999 WARN L228 SmtUtils]: Spent 5.15s on a formula simplification. DAG size of input: 159 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 01:55:22,538 WARN L228 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 150 DAG size of output: 100 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2022-01-18 01:58:08,888 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 01:58:08,897 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 01:58:09,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-01-18 01:58:09,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18806 ImplicationChecksByTransitivity, 286.0s TimeCoverageRelationStatistics Valid=5474, Invalid=42700, Unknown=6, NotChecked=0, Total=48180 [2022-01-18 01:58:09,645 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 1709 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 2936 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 3781 SdHoareTripleChecker+Invalid, 3494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 2936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 185 IncrementalHoareTripleChecker+Unchecked, 29.9s IncrementalHoareTripleChecker+Time [2022-01-18 01:58:09,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1709 Valid, 3781 Invalid, 3494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 2936 Invalid, 0 Unknown, 185 Unchecked, 29.9s Time] [2022-01-18 01:58:09,646 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 01:58:09,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 01:58:09,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 01:58:09,848 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4130states) and FLOYD_HOARE automaton (currently 182 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 220 known predicates. [2022-01-18 01:58:09,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 01:58:09,849 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 01:58:09,852 INFO L732 BasicCegarLoop]: Path program histogram: [10, 3, 1, 1] [2022-01-18 01:58:09,854 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 01:58:09,854 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 01:58:09,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 01:58:09 BasicIcfg [2022-01-18 01:58:09,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 01:58:09,856 INFO L158 Benchmark]: Toolchain (without parser) took 844711.37ms. Allocated memory was 337.6MB in the beginning and 587.2MB in the end (delta: 249.6MB). Free memory was 282.8MB in the beginning and 411.1MB in the end (delta: -128.3MB). Peak memory consumption was 122.7MB. Max. memory is 16.0GB. [2022-01-18 01:58:09,856 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 337.6MB. Free memory is still 299.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 01:58:09,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.36ms. Allocated memory was 337.6MB in the beginning and 488.6MB in the end (delta: 151.0MB). Free memory was 282.7MB in the beginning and 459.7MB in the end (delta: -177.0MB). Peak memory consumption was 11.3MB. Max. memory is 16.0GB. [2022-01-18 01:58:09,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.86ms. Allocated memory is still 488.6MB. Free memory was 459.7MB in the beginning and 457.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 01:58:09,857 INFO L158 Benchmark]: Boogie Preprocessor took 29.28ms. Allocated memory is still 488.6MB. Free memory was 457.6MB in the beginning and 456.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 01:58:09,857 INFO L158 Benchmark]: RCFGBuilder took 302.36ms. Allocated memory is still 488.6MB. Free memory was 456.6MB in the beginning and 441.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 01:58:09,857 INFO L158 Benchmark]: TraceAbstraction took 844066.91ms. Allocated memory was 488.6MB in the beginning and 587.2MB in the end (delta: 98.6MB). Free memory was 441.9MB in the beginning and 411.1MB in the end (delta: 30.7MB). Peak memory consumption was 131.4MB. Max. memory is 16.0GB. [2022-01-18 01:58:09,859 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 337.6MB. Free memory is still 299.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 280.36ms. Allocated memory was 337.6MB in the beginning and 488.6MB in the end (delta: 151.0MB). Free memory was 282.7MB in the beginning and 459.7MB in the end (delta: -177.0MB). Peak memory consumption was 11.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.86ms. Allocated memory is still 488.6MB. Free memory was 459.7MB in the beginning and 457.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.28ms. Allocated memory is still 488.6MB. Free memory was 457.6MB in the beginning and 456.6MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 302.36ms. Allocated memory is still 488.6MB. Free memory was 456.6MB in the beginning and 441.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 844066.91ms. Allocated memory was 488.6MB in the beginning and 587.2MB in the end (delta: 98.6MB). Free memory was 441.9MB in the beginning and 411.1MB in the end (delta: 30.7MB). Peak memory consumption was 131.4MB. 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 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4130states) and FLOYD_HOARE automaton (currently 182 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 220 known predicates. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4130states) and FLOYD_HOARE automaton (currently 182 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 220 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (4130states) and FLOYD_HOARE automaton (currently 182 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 220 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 844.0s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.1s, AutomataDifference: 768.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 20477 SdHoareTripleChecker+Valid, 118.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20477 mSDsluCounter, 43741 SdHoareTripleChecker+Invalid, 113.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 411 IncrementalHoareTripleChecker+Unchecked, 44093 mSDsCounter, 2786 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24447 IncrementalHoareTripleChecker+Invalid, 27645 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2786 mSolverCounterUnsat, 2272 mSDtfsCounter, 24447 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3246 GetRequests, 1521 SyntacticMatches, 42 SemanticMatches, 1682 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 104161 ImplicationChecksByTransitivity, 683.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4130occurred in iteration=14, InterpolantAutomatonStates: 1232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 14 MinimizatonAttempts, 29278 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 69.3s InterpolantComputationTime, 2012 NumberOfCodeBlocks, 2012 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2879 ConstructedInterpolants, 28 QuantifiedInterpolants, 79282 SizeOfPredicates, 183 NumberOfNonLiveVariables, 2026 ConjunctsInSsa, 364 ConjunctsInUnsatCore, 39 InterpolantComputations, 4 PerfectInterpolantSequences, 17/345 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown