/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:17:24,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:17:24,148 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:17:24,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:17:24,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:17:24,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:17:24,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:17:24,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:17:24,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:17:24,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:17:24,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:17:24,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:17:24,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:17:24,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:17:24,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:17:24,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:17:24,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:17:24,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:17:24,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:17:24,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:17:24,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:17:24,218 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:17:24,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:17:24,224 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:17:24,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 19:17:24,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:17:24,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:17:24,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:17:24,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 19:17:24,264 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:17:24,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:17:24,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:17:24,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:17:24,266 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:17:24,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:17:24,266 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:17:24,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:17:24,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:17:24,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:17:24,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:17:24,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:17:24,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:17:24,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:17:24,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:17:24,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:17:24,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:17:24,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:17:24,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:17:24,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:17:24,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:17:24,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:17:24,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:17:24,269 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:17:24,269 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:17:24,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:17:24,270 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:17:24,501 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:17:24,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:17:24,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:17:24,526 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:17:24,526 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:17:24,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-03-15 19:17:24,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30418bd7/3c68406910184c5bb2fe80e1011606fa/FLAG8b15a3c94 [2022-03-15 19:17:25,028 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:17:25,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-03-15 19:17:25,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30418bd7/3c68406910184c5bb2fe80e1011606fa/FLAG8b15a3c94 [2022-03-15 19:17:25,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d30418bd7/3c68406910184c5bb2fe80e1011606fa [2022-03-15 19:17:25,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:17:25,060 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:17:25,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:17:25,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:17:25,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:17:25,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3232d093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25, skipping insertion in model container [2022-03-15 19:17:25,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:17:25,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:17:25,236 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-figure3.wvr.c[2121,2134] [2022-03-15 19:17:25,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:17:25,245 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:17:25,259 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-figure3.wvr.c[2121,2134] [2022-03-15 19:17:25,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:17:25,270 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:17:25,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25 WrapperNode [2022-03-15 19:17:25,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:17:25,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:17:25,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:17:25,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:17:25,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,305 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-03-15 19:17:25,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:17:25,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:17:25,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:17:25,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:17:25,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:17:25,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:17:25,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:17:25,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:17:25,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (1/1) ... [2022-03-15 19:17:25,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:17:25,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:25,368 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) [2022-03-15 19:17:25,380 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 [2022-03-15 19:17:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:17:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:17:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:17:25,405 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:17:25,405 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:17:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:17:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:17:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:17:25,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 19:17:25,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 19:17:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:17:25,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:17:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:17:25,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:17:25,409 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 19:17:25,507 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:17:25,508 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:17:25,702 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:17:25,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:17:25,725 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-15 19:17:25,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:17:25 BoogieIcfgContainer [2022-03-15 19:17:25,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:17:25,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:17:25,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:17:25,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:17:25,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:17:25" (1/3) ... [2022-03-15 19:17:25,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106072db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:17:25, skipping insertion in model container [2022-03-15 19:17:25,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:17:25" (2/3) ... [2022-03-15 19:17:25,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@106072db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:17:25, skipping insertion in model container [2022-03-15 19:17:25,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:17:25" (3/3) ... [2022-03-15 19:17:25,734 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-03-15 19:17:25,738 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:17:25,738 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:17:25,738 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:17:25,739 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:17:25,777 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,778 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,778 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,779 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,779 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,779 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,781 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,781 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,782 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,782 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,783 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,784 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,785 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,786 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,787 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,788 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,789 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,792 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,793 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,794 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:17:25,797 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-15 19:17:25,848 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:17:25,854 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 19:17:25,854 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 19:17:25,871 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:17:25,880 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 87 transitions, 190 flow [2022-03-15 19:17:25,882 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 87 transitions, 190 flow [2022-03-15 19:17:25,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 88 places, 87 transitions, 190 flow [2022-03-15 19:17:25,923 INFO L129 PetriNetUnfolder]: 6/85 cut-off events. [2022-03-15 19:17:25,924 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-03-15 19:17:25,927 INFO L84 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 85 events. 6/85 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 52 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2022-03-15 19:17:25,928 INFO L116 LiptonReduction]: Number of co-enabled transitions 500 [2022-03-15 19:17:27,920 INFO L131 LiptonReduction]: Checked pairs total: 553 [2022-03-15 19:17:27,921 INFO L133 LiptonReduction]: Total number of compositions: 78 [2022-03-15 19:17:27,927 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 23 places, 18 transitions, 52 flow [2022-03-15 19:17:27,952 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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) [2022-03-15 19:17:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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) [2022-03-15 19:17:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 19:17:27,958 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:27,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:27,959 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1849282078, now seen corresponding path program 1 times [2022-03-15 19:17:27,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:27,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200454617] [2022-03-15 19:17:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:27,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:28,161 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:28,161 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200454617] [2022-03-15 19:17:28,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200454617] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:17:28,161 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:17:28,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-03-15 19:17:28,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [158491198] [2022-03-15 19:17:28,163 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:28,167 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:28,181 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 57 transitions. [2022-03-15 19:17:28,182 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:28,388 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:17:28,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 19:17:28,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 19:17:28,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 19:17:28,408 INFO L87 Difference]: Start difference. First operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 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 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-03-15 19:17:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:28,439 INFO L93 Difference]: Finished difference Result 57 states and 116 transitions. [2022-03-15 19:17:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 19:17:28,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2022-03-15 19:17:28,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:28,448 INFO L225 Difference]: With dead ends: 57 [2022-03-15 19:17:28,448 INFO L226 Difference]: Without dead ends: 42 [2022-03-15 19:17:28,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 19:17:28,451 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:28,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:17:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-15 19:17:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-15 19:17:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.1463414634146343) internal successors, (88), 41 states have internal predecessors, (88), 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) [2022-03-15 19:17:28,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 88 transitions. [2022-03-15 19:17:28,481 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 88 transitions. Word has length 13 [2022-03-15 19:17:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:28,482 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 88 transitions. [2022-03-15 19:17:28,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-03-15 19:17:28,482 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 88 transitions. [2022-03-15 19:17:28,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 19:17:28,483 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:28,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:28,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:17:28,486 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:28,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:28,488 INFO L85 PathProgramCache]: Analyzing trace with hash -359405696, now seen corresponding path program 1 times [2022-03-15 19:17:28,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:28,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739401660] [2022-03-15 19:17:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:28,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:28,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:28,608 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:28,609 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739401660] [2022-03-15 19:17:28,609 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739401660] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:17:28,609 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:17:28,609 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-15 19:17:28,609 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [801812684] [2022-03-15 19:17:28,609 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:28,611 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:28,615 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 74 transitions. [2022-03-15 19:17:28,615 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:28,846 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [310#(= thread1Thread1of1ForFork0_~i~0 0), 308#(< (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296) (mod ~N~0 4294967296)), 309#(< 0 (mod ~N~0 4294967296)), 312#(<= (mod ~N~0 4294967296) 0), 311#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))] [2022-03-15 19:17:28,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:17:28,847 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:28,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:17:28,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-03-15 19:17:28,848 INFO L87 Difference]: Start difference. First operand 42 states and 88 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:29,032 INFO L93 Difference]: Finished difference Result 48 states and 100 transitions. [2022-03-15 19:17:29,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:17:29,033 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 19:17:29,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:29,033 INFO L225 Difference]: With dead ends: 48 [2022-03-15 19:17:29,033 INFO L226 Difference]: Without dead ends: 44 [2022-03-15 19:17:29,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-03-15 19:17:29,035 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:29,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 28 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:17:29,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-15 19:17:29,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-15 19:17:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.13953488372093) internal successors, (92), 43 states have internal predecessors, (92), 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) [2022-03-15 19:17:29,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 92 transitions. [2022-03-15 19:17:29,040 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 92 transitions. Word has length 14 [2022-03-15 19:17:29,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:29,040 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 92 transitions. [2022-03-15 19:17:29,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:29,041 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 92 transitions. [2022-03-15 19:17:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 19:17:29,041 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:29,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:29,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 19:17:29,042 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:29,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:29,042 INFO L85 PathProgramCache]: Analyzing trace with hash -996753635, now seen corresponding path program 1 times [2022-03-15 19:17:29,043 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:29,044 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915199722] [2022-03-15 19:17:29,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:29,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:29,125 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:29,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915199722] [2022-03-15 19:17:29,125 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915199722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:29,125 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088368130] [2022-03-15 19:17:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:29,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:29,131 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) [2022-03-15 19:17:29,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 19:17:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:29,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 19:17:29,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:17:29,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:29,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:17:29,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088368130] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:29,345 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:29,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 4 [2022-03-15 19:17:29,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1753874694] [2022-03-15 19:17:29,345 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:29,346 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:29,350 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 76 transitions. [2022-03-15 19:17:29,351 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:29,890 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [551#(or (= ~counter~0 (+ (* (div (+ ~counter~0 (* (- 1) ~c~0)) 4294967296) 4294967296) ~c~0)) (<= (mod ~counter~0 4294967296) 0))] [2022-03-15 19:17:29,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 19:17:29,890 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:29,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 19:17:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 19:17:29,891 INFO L87 Difference]: Start difference. First operand 44 states and 92 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-03-15 19:17:29,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:29,967 INFO L93 Difference]: Finished difference Result 87 states and 181 transitions. [2022-03-15 19:17:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:17:29,968 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 15 [2022-03-15 19:17:29,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:29,970 INFO L225 Difference]: With dead ends: 87 [2022-03-15 19:17:29,970 INFO L226 Difference]: Without dead ends: 68 [2022-03-15 19:17:29,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-03-15 19:17:29,973 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:29,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:17:29,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-15 19:17:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2022-03-15 19:17:29,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.2033898305084745) internal successors, (130), 59 states have internal predecessors, (130), 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) [2022-03-15 19:17:29,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 130 transitions. [2022-03-15 19:17:29,991 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 130 transitions. Word has length 15 [2022-03-15 19:17:29,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:29,991 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 130 transitions. [2022-03-15 19:17:29,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2022-03-15 19:17:29,991 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 130 transitions. [2022-03-15 19:17:29,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:17:29,992 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:29,992 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:30,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:30,193 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 [2022-03-15 19:17:30,194 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:30,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1607800417, now seen corresponding path program 2 times [2022-03-15 19:17:30,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:30,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329750940] [2022-03-15 19:17:30,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:30,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:30,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:30,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329750940] [2022-03-15 19:17:30,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329750940] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:30,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345839267] [2022-03-15 19:17:30,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:17:30,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:30,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:30,288 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) [2022-03-15 19:17:30,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 19:17:30,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:17:30,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:30,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:17:30,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:30,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:30,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:30,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345839267] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:30,529 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:30,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2022-03-15 19:17:30,530 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1807876500] [2022-03-15 19:17:30,530 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:30,531 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:30,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 62 transitions. [2022-03-15 19:17:30,537 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:30,735 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [832#(< (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296) (mod ~N~0 4294967296)), 865#(<= (+ (* (div thread1Thread1of1ForFork0_~i~0 4294967296) 4294967296) 1) thread1Thread1of1ForFork0_~i~0), 864#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))] [2022-03-15 19:17:30,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:17:30,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:30,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:17:30,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2022-03-15 19:17:30,737 INFO L87 Difference]: Start difference. First operand 60 states and 130 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:31,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:31,016 INFO L93 Difference]: Finished difference Result 98 states and 207 transitions. [2022-03-15 19:17:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:17:31,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:17:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:31,018 INFO L225 Difference]: With dead ends: 98 [2022-03-15 19:17:31,018 INFO L226 Difference]: Without dead ends: 92 [2022-03-15 19:17:31,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2022-03-15 19:17:31,019 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:31,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 10 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:17:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-03-15 19:17:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 70. [2022-03-15 19:17:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.2753623188405796) internal successors, (157), 69 states have internal predecessors, (157), 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) [2022-03-15 19:17:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 157 transitions. [2022-03-15 19:17:31,024 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 157 transitions. Word has length 16 [2022-03-15 19:17:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:31,024 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 157 transitions. [2022-03-15 19:17:31,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:31,025 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 157 transitions. [2022-03-15 19:17:31,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 19:17:31,025 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:31,025 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:31,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:31,251 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 [2022-03-15 19:17:31,252 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:31,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:31,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1831860225, now seen corresponding path program 3 times [2022-03-15 19:17:31,254 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:31,254 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381604341] [2022-03-15 19:17:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:31,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:31,354 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:31,354 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381604341] [2022-03-15 19:17:31,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381604341] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:31,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747467959] [2022-03-15 19:17:31,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:17:31,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:31,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:31,356 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) [2022-03-15 19:17:31,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 19:17:31,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:17:31,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:31,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:17:31,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:31,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:31,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747467959] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:31,594 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:31,594 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2022-03-15 19:17:31,594 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2136659643] [2022-03-15 19:17:31,595 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:31,596 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:31,601 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 88 transitions. [2022-03-15 19:17:31,602 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:32,045 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1234#(<= (+ 2 (* (div ~N~0 4294967296) 4294967296)) ~N~0), 1200#(< (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296) (mod ~N~0 4294967296)), 1233#(or (<= (mod ~N~0 4294967296) 0) (< 1 (mod ~N~0 4294967296))), 1235#(<= (+ (* (div thread1Thread1of1ForFork0_~i~0 4294967296) 4294967296) 1) thread1Thread1of1ForFork0_~i~0), 1232#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (< (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296) (mod ~N~0 4294967296)))] [2022-03-15 19:17:32,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 19:17:32,045 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:32,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 19:17:32,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-03-15 19:17:32,046 INFO L87 Difference]: Start difference. First operand 70 states and 157 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:32,245 INFO L93 Difference]: Finished difference Result 84 states and 185 transitions. [2022-03-15 19:17:32,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:17:32,247 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 19:17:32,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:32,251 INFO L225 Difference]: With dead ends: 84 [2022-03-15 19:17:32,252 INFO L226 Difference]: Without dead ends: 84 [2022-03-15 19:17:32,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:17:32,253 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:32,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 19 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:17:32,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-03-15 19:17:32,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 70. [2022-03-15 19:17:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 2.2028985507246377) internal successors, (152), 69 states have internal predecessors, (152), 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) [2022-03-15 19:17:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 152 transitions. [2022-03-15 19:17:32,258 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 152 transitions. Word has length 16 [2022-03-15 19:17:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:32,258 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 152 transitions. [2022-03-15 19:17:32,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:32,258 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 152 transitions. [2022-03-15 19:17:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 19:17:32,259 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:32,259 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:32,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:32,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:32,481 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:32,482 INFO L85 PathProgramCache]: Analyzing trace with hash 601796222, now seen corresponding path program 4 times [2022-03-15 19:17:32,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:32,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018256514] [2022-03-15 19:17:32,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:32,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:32,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:32,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:32,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:32,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018256514] [2022-03-15 19:17:32,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018256514] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:32,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310981600] [2022-03-15 19:17:32,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:17:32,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:32,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:32,609 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) [2022-03-15 19:17:32,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 19:17:32,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:17:32,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:32,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 19:17:32,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:17:32,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:32,812 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:17:32,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310981600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:32,812 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:32,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-03-15 19:17:32,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2060439431] [2022-03-15 19:17:32,812 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:32,814 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:32,822 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 100 transitions. [2022-03-15 19:17:32,823 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:33,961 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1580#(and (or (<= (mod ~counter~0 4294967296) 0) (<= ~counter~0 (+ (* (div (+ ~counter~0 (* (- 1) ~c~0)) 4294967296) 4294967296) ~c~0))) (or (<= (mod ~counter~0 4294967296) 0) (<= ~c~0 ~counter~0))), 1581#(and (or (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (<= (* 2 ~c~0) ~counter~0)) (or (<= ~counter~0 (+ (* 2 ~c~0) (* (div (+ ~counter~0 (* (- 2) ~c~0)) 4294967296) 4294967296))) (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0)))] [2022-03-15 19:17:33,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:17:33,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:33,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:17:33,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:17:33,962 INFO L87 Difference]: Start difference. First operand 70 states and 152 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:34,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:34,045 INFO L93 Difference]: Finished difference Result 139 states and 299 transitions. [2022-03-15 19:17:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:17:34,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 19:17:34,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:34,046 INFO L225 Difference]: With dead ends: 139 [2022-03-15 19:17:34,046 INFO L226 Difference]: Without dead ends: 116 [2022-03-15 19:17:34,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:17:34,047 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 36 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:34,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 13 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:17:34,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-15 19:17:34,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 88. [2022-03-15 19:17:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.2988505747126435) internal successors, (200), 87 states have internal predecessors, (200), 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) [2022-03-15 19:17:34,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 200 transitions. [2022-03-15 19:17:34,054 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 200 transitions. Word has length 17 [2022-03-15 19:17:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:34,054 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 200 transitions. [2022-03-15 19:17:34,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:34,055 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 200 transitions. [2022-03-15 19:17:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:17:34,055 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:34,056 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:34,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:34,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:34,268 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1987702526, now seen corresponding path program 5 times [2022-03-15 19:17:34,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:34,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254400599] [2022-03-15 19:17:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:34,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:34,425 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:34,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254400599] [2022-03-15 19:17:34,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254400599] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:34,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127628393] [2022-03-15 19:17:34,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:17:34,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:34,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:34,427 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) [2022-03-15 19:17:34,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 19:17:34,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:17:34,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:34,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:17:34,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:34,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:34,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127628393] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:34,758 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:34,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2022-03-15 19:17:34,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1823542048] [2022-03-15 19:17:34,758 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:34,761 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:34,767 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 68 transitions. [2022-03-15 19:17:34,767 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:35,099 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [2020#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 2022#(= thread1Thread1of1ForFork0_~i~0 0), 1980#(< (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296) (mod ~N~0 4294967296)), 2021#(and (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (+ ~N~0 thread1Thread1of1ForFork0_~i~0) (+ 4294967296 (* (div ~N~0 4294967296) 4294967296))))] [2022-03-15 19:17:35,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:17:35,100 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:35,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:17:35,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-03-15 19:17:35,100 INFO L87 Difference]: Start difference. First operand 88 states and 200 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:35,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:35,580 INFO L93 Difference]: Finished difference Result 158 states and 352 transitions. [2022-03-15 19:17:35,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 19:17:35,580 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 19:17:35,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:35,581 INFO L225 Difference]: With dead ends: 158 [2022-03-15 19:17:35,581 INFO L226 Difference]: Without dead ends: 152 [2022-03-15 19:17:35,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 19:17:35,582 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 54 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:35,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 17 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:17:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-15 19:17:35,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 102. [2022-03-15 19:17:35,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.405940594059406) internal successors, (243), 101 states have internal predecessors, (243), 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) [2022-03-15 19:17:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 243 transitions. [2022-03-15 19:17:35,590 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 243 transitions. Word has length 18 [2022-03-15 19:17:35,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:35,590 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 243 transitions. [2022-03-15 19:17:35,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:35,590 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 243 transitions. [2022-03-15 19:17:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:17:35,591 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:35,591 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:35,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:35,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:35,800 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1132395872, now seen corresponding path program 6 times [2022-03-15 19:17:35,801 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:35,801 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508969669] [2022-03-15 19:17:35,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:35,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:35,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:35,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508969669] [2022-03-15 19:17:35,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508969669] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:35,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788838823] [2022-03-15 19:17:35,891 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:17:35,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:35,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:35,896 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) [2022-03-15 19:17:35,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 19:17:35,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 19:17:35,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:35,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:17:35,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:36,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:36,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:36,204 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788838823] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:36,205 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:36,205 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 19:17:36,205 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [286439389] [2022-03-15 19:17:36,205 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:36,207 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:36,213 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 72 transitions. [2022-03-15 19:17:36,213 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:36,564 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [2537#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 2536#(= thread1Thread1of1ForFork0_~i~0 0), 2535#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:17:36,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:17:36,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:36,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:17:36,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:17:36,565 INFO L87 Difference]: Start difference. First operand 102 states and 243 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:36,939 INFO L93 Difference]: Finished difference Result 194 states and 437 transitions. [2022-03-15 19:17:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:17:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 19:17:36,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:36,941 INFO L225 Difference]: With dead ends: 194 [2022-03-15 19:17:36,941 INFO L226 Difference]: Without dead ends: 178 [2022-03-15 19:17:36,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:17:36,942 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:36,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 14 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:17:36,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-03-15 19:17:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 98. [2022-03-15 19:17:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.2783505154639174) internal successors, (221), 97 states have internal predecessors, (221), 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) [2022-03-15 19:17:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 221 transitions. [2022-03-15 19:17:36,947 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 221 transitions. Word has length 18 [2022-03-15 19:17:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:36,948 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 221 transitions. [2022-03-15 19:17:36,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 221 transitions. [2022-03-15 19:17:36,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:17:36,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:36,949 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:36,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:37,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:37,177 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:37,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:37,177 INFO L85 PathProgramCache]: Analyzing trace with hash -376761568, now seen corresponding path program 7 times [2022-03-15 19:17:37,178 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:37,178 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428154639] [2022-03-15 19:17:37,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:37,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:37,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:37,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:37,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428154639] [2022-03-15 19:17:37,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428154639] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:37,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497820899] [2022-03-15 19:17:37,359 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:17:37,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:37,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:37,361 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) [2022-03-15 19:17:37,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 19:17:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:37,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:17:37,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:37,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:37,644 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497820899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:37,644 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:37,644 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2022-03-15 19:17:37,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [661109932] [2022-03-15 19:17:37,644 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:37,646 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:37,651 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 77 transitions. [2022-03-15 19:17:37,651 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:37,996 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [3035#(< (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296) (mod ~N~0 4294967296)), 3077#(and (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0)), 3075#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 3078#(= thread1Thread1of1ForFork0_~i~0 0), 3076#(and (<= (div thread1Thread1of1ForFork0_~i~0 4294967296) 0) (<= 2 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:17:37,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:17:37,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:37,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:17:37,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2022-03-15 19:17:37,998 INFO L87 Difference]: Start difference. First operand 98 states and 221 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:38,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:38,596 INFO L93 Difference]: Finished difference Result 190 states and 425 transitions. [2022-03-15 19:17:38,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 19:17:38,597 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 19:17:38,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:38,598 INFO L225 Difference]: With dead ends: 190 [2022-03-15 19:17:38,598 INFO L226 Difference]: Without dead ends: 184 [2022-03-15 19:17:38,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=1253, Unknown=0, NotChecked=0, Total=1560 [2022-03-15 19:17:38,599 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 71 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:38,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 21 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:17:38,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-03-15 19:17:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 116. [2022-03-15 19:17:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.4) internal successors, (276), 115 states have internal predecessors, (276), 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) [2022-03-15 19:17:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 276 transitions. [2022-03-15 19:17:38,605 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 276 transitions. Word has length 18 [2022-03-15 19:17:38,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:38,605 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 276 transitions. [2022-03-15 19:17:38,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 276 transitions. [2022-03-15 19:17:38,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:17:38,607 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:38,607 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:38,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-15 19:17:38,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:38,829 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:38,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:38,829 INFO L85 PathProgramCache]: Analyzing trace with hash 478545086, now seen corresponding path program 8 times [2022-03-15 19:17:38,830 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:38,830 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295952548] [2022-03-15 19:17:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:38,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:38,920 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:38,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295952548] [2022-03-15 19:17:38,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295952548] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:38,920 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168904666] [2022-03-15 19:17:38,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:17:38,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:38,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:38,921 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) [2022-03-15 19:17:38,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 19:17:38,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:17:38,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:38,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:17:38,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:39,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:39,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168904666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:39,206 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:39,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-03-15 19:17:39,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [200652657] [2022-03-15 19:17:39,206 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:39,208 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:39,213 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2022-03-15 19:17:39,213 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:39,618 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [3664#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 3665#(= thread1Thread1of1ForFork0_~i~0 0), 3663#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 3662#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)))] [2022-03-15 19:17:39,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:17:39,618 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:39,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:17:39,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:17:39,619 INFO L87 Difference]: Start difference. First operand 116 states and 276 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:39,980 INFO L93 Difference]: Finished difference Result 172 states and 397 transitions. [2022-03-15 19:17:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:17:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 19:17:39,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:39,981 INFO L225 Difference]: With dead ends: 172 [2022-03-15 19:17:39,981 INFO L226 Difference]: Without dead ends: 164 [2022-03-15 19:17:39,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=575, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:17:39,982 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:39,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 22 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:17:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-15 19:17:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 112. [2022-03-15 19:17:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.3423423423423424) internal successors, (260), 111 states have internal predecessors, (260), 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) [2022-03-15 19:17:39,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 260 transitions. [2022-03-15 19:17:39,988 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 260 transitions. Word has length 18 [2022-03-15 19:17:39,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:39,988 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 260 transitions. [2022-03-15 19:17:39,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:39,988 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 260 transitions. [2022-03-15 19:17:39,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 19:17:39,989 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:39,989 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:40,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:40,202 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,SelfDestructingSolverStorable9 [2022-03-15 19:17:40,202 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:40,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1223247584, now seen corresponding path program 9 times [2022-03-15 19:17:40,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:40,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631349686] [2022-03-15 19:17:40,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:40,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:40,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:40,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:40,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631349686] [2022-03-15 19:17:40,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631349686] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:40,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38823691] [2022-03-15 19:17:40,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:17:40,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:40,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:40,295 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) [2022-03-15 19:17:40,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 19:17:40,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:17:40,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:40,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 19:17:40,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:40,456 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:40,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:40,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38823691] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:40,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:40,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-15 19:17:40,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2009878351] [2022-03-15 19:17:40,571 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:40,573 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:40,580 INFO L252 McrAutomatonBuilder]: Finished intersection with 62 states and 112 transitions. [2022-03-15 19:17:40,580 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:41,271 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [4202#(or (<= (mod ~N~0 4294967296) 1) (<= (+ 3 (* (div ~N~0 4294967296) 4294967296)) ~N~0)), 4200#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 4201#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296))), 4204#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 4205#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 4206#(= thread1Thread1of1ForFork0_~i~0 0), 4203#(<= (+ 3 (* (div ~N~0 4294967296) 4294967296)) ~N~0)] [2022-03-15 19:17:41,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:17:41,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:17:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:17:41,272 INFO L87 Difference]: Start difference. First operand 112 states and 260 transitions. Second operand has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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) [2022-03-15 19:17:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:41,752 INFO L93 Difference]: Finished difference Result 142 states and 324 transitions. [2022-03-15 19:17:41,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 19:17:41,753 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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 18 [2022-03-15 19:17:41,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:41,754 INFO L225 Difference]: With dead ends: 142 [2022-03-15 19:17:41,754 INFO L226 Difference]: Without dead ends: 142 [2022-03-15 19:17:41,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=682, Unknown=0, NotChecked=0, Total=812 [2022-03-15 19:17:41,755 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 40 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:41,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 32 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:17:41,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-03-15 19:17:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2022-03-15 19:17:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.2752293577981653) internal successors, (248), 109 states have internal predecessors, (248), 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) [2022-03-15 19:17:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 248 transitions. [2022-03-15 19:17:41,759 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 248 transitions. Word has length 18 [2022-03-15 19:17:41,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:41,759 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 248 transitions. [2022-03-15 19:17:41,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 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) [2022-03-15 19:17:41,759 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 248 transitions. [2022-03-15 19:17:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 19:17:41,760 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:41,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:41,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:41,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:41,975 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:41,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:41,976 INFO L85 PathProgramCache]: Analyzing trace with hash 820857789, now seen corresponding path program 10 times [2022-03-15 19:17:41,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:41,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976824745] [2022-03-15 19:17:41,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:41,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:42,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:42,097 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:42,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976824745] [2022-03-15 19:17:42,097 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976824745] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:42,097 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783794756] [2022-03-15 19:17:42,097 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:17:42,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:42,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:42,100 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) [2022-03-15 19:17:42,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 19:17:42,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:17:42,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:42,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 19:17:42,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:42,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:42,398 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:42,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783794756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:42,399 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:42,399 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-03-15 19:17:42,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1479314960] [2022-03-15 19:17:42,399 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:42,401 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:42,408 INFO L252 McrAutomatonBuilder]: Finished intersection with 68 states and 124 transitions. [2022-03-15 19:17:42,408 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:44,030 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [4713#(and (or (<= (mod ~counter~0 4294967296) 0) (<= ~counter~0 (+ (* (div (+ ~counter~0 (* (- 1) ~c~0)) 4294967296) 4294967296) ~c~0))) (or (<= (mod ~counter~0 4294967296) 0) (<= ~c~0 ~counter~0))), 4714#(and (or (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (<= (* 2 ~c~0) ~counter~0)) (or (<= ~counter~0 (+ (* 2 ~c~0) (* (div (+ ~counter~0 (* (- 2) ~c~0)) 4294967296) 4294967296))) (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0))), 4715#(and (or (<= ~counter~0 (+ (* (div (+ ~counter~0 (* ~c~0 (- 3))) 4294967296) 4294967296) (* 3 ~c~0))) (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (<= (mod (+ ~counter~0 (* 4294967294 ~c~0)) 4294967296) 0)) (or (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (<= (mod (+ ~counter~0 (* 4294967294 ~c~0)) 4294967296) 0) (<= (* 3 ~c~0) ~counter~0)))] [2022-03-15 19:17:44,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 19:17:44,031 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:44,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 19:17:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:17:44,031 INFO L87 Difference]: Start difference. First operand 110 states and 248 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:44,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:44,174 INFO L93 Difference]: Finished difference Result 213 states and 470 transitions. [2022-03-15 19:17:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 19:17:44,175 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 19:17:44,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:44,176 INFO L225 Difference]: With dead ends: 213 [2022-03-15 19:17:44,176 INFO L226 Difference]: Without dead ends: 186 [2022-03-15 19:17:44,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:17:44,177 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 42 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:44,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 23 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:17:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-03-15 19:17:44,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 134. [2022-03-15 19:17:44,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.330827067669173) internal successors, (310), 133 states have internal predecessors, (310), 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) [2022-03-15 19:17:44,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 310 transitions. [2022-03-15 19:17:44,181 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 310 transitions. Word has length 19 [2022-03-15 19:17:44,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:44,181 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 310 transitions. [2022-03-15 19:17:44,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 310 transitions. [2022-03-15 19:17:44,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:44,182 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:44,182 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:44,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-03-15 19:17:44,395 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,SelfDestructingSolverStorable11 [2022-03-15 19:17:44,395 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:44,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:44,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1793583489, now seen corresponding path program 11 times [2022-03-15 19:17:44,396 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:44,396 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519639316] [2022-03-15 19:17:44,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:44,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:44,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:44,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519639316] [2022-03-15 19:17:44,514 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519639316] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:44,514 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133082931] [2022-03-15 19:17:44,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:17:44,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:44,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:44,516 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) [2022-03-15 19:17:44,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 19:17:44,657 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 19:17:44,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:44,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:17:44,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:44,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:45,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133082931] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:45,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:45,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-03-15 19:17:45,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [551033521] [2022-03-15 19:17:45,020 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:45,022 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:45,028 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 74 transitions. [2022-03-15 19:17:45,028 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:45,261 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [5335#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 5337#(= thread1Thread1of1ForFork0_~i~0 0), 5336#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:17:45,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:17:45,262 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:45,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:17:45,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:17:45,263 INFO L87 Difference]: Start difference. First operand 134 states and 310 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:45,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:45,875 INFO L93 Difference]: Finished difference Result 266 states and 586 transitions. [2022-03-15 19:17:45,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 19:17:45,876 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 19:17:45,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:45,877 INFO L225 Difference]: With dead ends: 266 [2022-03-15 19:17:45,877 INFO L226 Difference]: Without dead ends: 258 [2022-03-15 19:17:45,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 62 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=1590, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 19:17:45,878 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 53 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:45,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 18 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:17:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-15 19:17:45,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 142. [2022-03-15 19:17:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.382978723404255) internal successors, (336), 141 states have internal predecessors, (336), 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) [2022-03-15 19:17:45,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 336 transitions. [2022-03-15 19:17:45,883 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 336 transitions. Word has length 20 [2022-03-15 19:17:45,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:45,883 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 336 transitions. [2022-03-15 19:17:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:45,884 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 336 transitions. [2022-03-15 19:17:45,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:45,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:45,884 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:45,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:46,089 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,SelfDestructingSolverStorable12 [2022-03-15 19:17:46,089 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:46,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1646077153, now seen corresponding path program 12 times [2022-03-15 19:17:46,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:46,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386314958] [2022-03-15 19:17:46,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:46,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:17:46,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:46,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386314958] [2022-03-15 19:17:46,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386314958] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:46,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292600134] [2022-03-15 19:17:46,195 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:17:46,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:46,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:46,197 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) [2022-03-15 19:17:46,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 19:17:46,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 19:17:46,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:46,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:17:46,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:46,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:46,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:46,702 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292600134] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:46,702 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:46,702 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 23 [2022-03-15 19:17:46,702 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1828881640] [2022-03-15 19:17:46,703 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:46,704 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:46,709 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 78 transitions. [2022-03-15 19:17:46,709 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:47,033 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [6079#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 6080#(= thread1Thread1of1ForFork0_~i~0 0), 6078#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)))] [2022-03-15 19:17:47,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 19:17:47,033 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 19:17:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2022-03-15 19:17:47,034 INFO L87 Difference]: Start difference. First operand 142 states and 336 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:47,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:47,365 INFO L93 Difference]: Finished difference Result 242 states and 560 transitions. [2022-03-15 19:17:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 19:17:47,365 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 19:17:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:47,367 INFO L225 Difference]: With dead ends: 242 [2022-03-15 19:17:47,367 INFO L226 Difference]: Without dead ends: 234 [2022-03-15 19:17:47,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 55 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 19:17:47,368 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 32 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:47,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 16 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:17:47,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-03-15 19:17:47,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 130. [2022-03-15 19:17:47,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.356589147286822) internal successors, (304), 129 states have internal predecessors, (304), 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) [2022-03-15 19:17:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 304 transitions. [2022-03-15 19:17:47,372 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 304 transitions. Word has length 20 [2022-03-15 19:17:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:47,372 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 304 transitions. [2022-03-15 19:17:47,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:17:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 304 transitions. [2022-03-15 19:17:47,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:47,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:47,373 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:47,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:47,579 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,SelfDestructingSolverStorable13 [2022-03-15 19:17:47,580 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:47,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:47,580 INFO L85 PathProgramCache]: Analyzing trace with hash -901374655, now seen corresponding path program 13 times [2022-03-15 19:17:47,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:47,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850639608] [2022-03-15 19:17:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:47,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:47,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:47,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850639608] [2022-03-15 19:17:47,680 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850639608] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:47,680 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571565591] [2022-03-15 19:17:47,680 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:17:47,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:47,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:47,681 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:47,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 19:17:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:47,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:17:47,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:47,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:48,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:48,048 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571565591] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:48,048 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:48,048 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-03-15 19:17:48,048 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2056663931] [2022-03-15 19:17:48,048 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:48,049 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:48,055 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 87 transitions. [2022-03-15 19:17:48,055 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:48,561 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [6743#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 6744#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296))), 6746#(= thread1Thread1of1ForFork0_~i~0 0), 6745#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:17:48,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 19:17:48,561 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 19:17:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:17:48,562 INFO L87 Difference]: Start difference. First operand 130 states and 304 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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) [2022-03-15 19:17:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:49,066 INFO L93 Difference]: Finished difference Result 238 states and 552 transitions. [2022-03-15 19:17:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 19:17:49,067 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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 20 [2022-03-15 19:17:49,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:49,068 INFO L225 Difference]: With dead ends: 238 [2022-03-15 19:17:49,068 INFO L226 Difference]: Without dead ends: 226 [2022-03-15 19:17:49,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2022-03-15 19:17:49,069 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 44 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:49,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 18 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:17:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-03-15 19:17:49,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 124. [2022-03-15 19:17:49,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.3658536585365852) internal successors, (291), 123 states have internal predecessors, (291), 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) [2022-03-15 19:17:49,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 291 transitions. [2022-03-15 19:17:49,074 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 291 transitions. Word has length 20 [2022-03-15 19:17:49,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:49,074 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 291 transitions. [2022-03-15 19:17:49,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 15 states have internal predecessors, (53), 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) [2022-03-15 19:17:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 291 transitions. [2022-03-15 19:17:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:49,075 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:49,075 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:49,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:49,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-03-15 19:17:49,300 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:49,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:49,300 INFO L85 PathProgramCache]: Analyzing trace with hash 2119179713, now seen corresponding path program 14 times [2022-03-15 19:17:49,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:49,301 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987651234] [2022-03-15 19:17:49,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:49,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:49,438 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:49,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:49,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987651234] [2022-03-15 19:17:49,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987651234] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:49,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688995829] [2022-03-15 19:17:49,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:17:49,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:49,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:49,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:49,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 19:17:49,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:17:49,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:49,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:17:49,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:49,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:49,867 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688995829] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:49,867 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:49,867 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-03-15 19:17:49,867 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [137853209] [2022-03-15 19:17:49,867 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:49,869 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:49,875 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 92 transitions. [2022-03-15 19:17:49,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:50,194 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [7399#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 7403#(= thread1Thread1of1ForFork0_~i~0 0), 7400#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0)), 7402#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 7401#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:17:50,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:17:50,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:17:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:17:50,195 INFO L87 Difference]: Start difference. First operand 124 states and 291 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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) [2022-03-15 19:17:51,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:51,033 INFO L93 Difference]: Finished difference Result 326 states and 722 transitions. [2022-03-15 19:17:51,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 19:17:51,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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 20 [2022-03-15 19:17:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:51,035 INFO L225 Difference]: With dead ends: 326 [2022-03-15 19:17:51,035 INFO L226 Difference]: Without dead ends: 318 [2022-03-15 19:17:51,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 75 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=2185, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 19:17:51,036 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:51,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 36 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 759 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:17:51,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-03-15 19:17:51,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 142. [2022-03-15 19:17:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.397163120567376) internal successors, (338), 141 states have internal predecessors, (338), 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) [2022-03-15 19:17:51,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 338 transitions. [2022-03-15 19:17:51,042 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 338 transitions. Word has length 20 [2022-03-15 19:17:51,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:51,042 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 338 transitions. [2022-03-15 19:17:51,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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) [2022-03-15 19:17:51,042 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 338 transitions. [2022-03-15 19:17:51,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:51,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:51,043 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:51,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:51,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:51,247 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1320480929, now seen corresponding path program 15 times [2022-03-15 19:17:51,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:51,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116487651] [2022-03-15 19:17:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:51,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:51,367 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:51,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116487651] [2022-03-15 19:17:51,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116487651] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:51,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601454506] [2022-03-15 19:17:51,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:17:51,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:51,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:51,369 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:51,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 19:17:51,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:17:51,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:51,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 19:17:51,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:51,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:52,279 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:52,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601454506] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:52,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:52,279 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-03-15 19:17:52,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1733163493] [2022-03-15 19:17:52,279 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:52,281 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:52,286 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 96 transitions. [2022-03-15 19:17:52,286 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:52,747 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [8225#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0)), 8227#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 8226#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 8224#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 8228#(= thread1Thread1of1ForFork0_~i~0 0)] [2022-03-15 19:17:52,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:17:52,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:17:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:17:52,748 INFO L87 Difference]: Start difference. First operand 142 states and 338 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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) [2022-03-15 19:17:53,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:53,406 INFO L93 Difference]: Finished difference Result 290 states and 670 transitions. [2022-03-15 19:17:53,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 19:17:53,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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 20 [2022-03-15 19:17:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:53,408 INFO L225 Difference]: With dead ends: 290 [2022-03-15 19:17:53,408 INFO L226 Difference]: Without dead ends: 282 [2022-03-15 19:17:53,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 68 SyntacticMatches, 8 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 549 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 19:17:53,409 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:53,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 30 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:17:53,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-03-15 19:17:53,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 134. [2022-03-15 19:17:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.3609022556390977) internal successors, (314), 133 states have internal predecessors, (314), 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) [2022-03-15 19:17:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 314 transitions. [2022-03-15 19:17:53,414 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 314 transitions. Word has length 20 [2022-03-15 19:17:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:53,414 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 314 transitions. [2022-03-15 19:17:53,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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) [2022-03-15 19:17:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 314 transitions. [2022-03-15 19:17:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:53,415 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:53,415 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:53,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:53,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 19:17:53,623 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:53,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:53,624 INFO L85 PathProgramCache]: Analyzing trace with hash -575778431, now seen corresponding path program 16 times [2022-03-15 19:17:53,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:53,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918597739] [2022-03-15 19:17:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:53,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:53,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:53,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918597739] [2022-03-15 19:17:53,747 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918597739] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:53,747 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423107075] [2022-03-15 19:17:53,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:17:53,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:53,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:53,752 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:53,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 19:17:53,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:17:53,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:53,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 19:17:53,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:54,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:54,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423107075] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:54,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:54,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-03-15 19:17:54,783 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [646650932] [2022-03-15 19:17:54,783 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:54,784 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:54,790 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 105 transitions. [2022-03-15 19:17:54,790 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:55,407 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [8969#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 8974#(= thread1Thread1of1ForFork0_~i~0 0), 8970#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296))), 8973#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 8971#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0)), 8972#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:17:55,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 19:17:55,407 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 19:17:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:17:55,408 INFO L87 Difference]: Start difference. First operand 134 states and 314 transitions. Second operand has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2022-03-15 19:17:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:56,203 INFO L93 Difference]: Finished difference Result 282 states and 651 transitions. [2022-03-15 19:17:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 19:17:56,203 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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 20 [2022-03-15 19:17:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:56,205 INFO L225 Difference]: With dead ends: 282 [2022-03-15 19:17:56,205 INFO L226 Difference]: Without dead ends: 270 [2022-03-15 19:17:56,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 69 SyntacticMatches, 8 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 19:17:56,206 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 49 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:56,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 32 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:17:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-03-15 19:17:56,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 136. [2022-03-15 19:17:56,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.362962962962963) internal successors, (319), 135 states have internal predecessors, (319), 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) [2022-03-15 19:17:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 319 transitions. [2022-03-15 19:17:56,210 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 319 transitions. Word has length 20 [2022-03-15 19:17:56,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:56,210 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 319 transitions. [2022-03-15 19:17:56,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 17 states have internal predecessors, (63), 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) [2022-03-15 19:17:56,210 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 319 transitions. [2022-03-15 19:17:56,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:56,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:56,211 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:56,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:56,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 19:17:56,431 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:56,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1035162527, now seen corresponding path program 17 times [2022-03-15 19:17:56,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:56,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007865983] [2022-03-15 19:17:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:56,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:56,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:56,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007865983] [2022-03-15 19:17:56,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007865983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:56,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536662133] [2022-03-15 19:17:56,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:17:56,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:56,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:56,550 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:56,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 19:17:56,660 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:17:56,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:56,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 19:17:56,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:56,798 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:56,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:57,050 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:57,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536662133] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:57,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:57,051 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 22 [2022-03-15 19:17:57,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1003572871] [2022-03-15 19:17:57,051 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:57,052 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:57,063 INFO L252 McrAutomatonBuilder]: Finished intersection with 74 states and 136 transitions. [2022-03-15 19:17:57,063 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:17:57,960 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [9709#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 9705#(or (<= (+ 4 (* (div ~N~0 4294967296) 4294967296)) ~N~0) (<= (mod ~N~0 4294967296) 2)), 9703#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296))), 9704#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (mod ~N~0 4294967296) (mod (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)) (<= (+ 4 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* (div (+ 3 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296) 4294967296)))), 9702#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 9707#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0)), 9706#(<= (+ 4 (* (div ~N~0 4294967296) 4294967296)) ~N~0), 9708#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 9710#(= thread1Thread1of1ForFork0_~i~0 0)] [2022-03-15 19:17:57,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 19:17:57,961 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:17:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 19:17:57,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-03-15 19:17:57,961 INFO L87 Difference]: Start difference. First operand 136 states and 319 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 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) [2022-03-15 19:17:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:17:58,919 INFO L93 Difference]: Finished difference Result 232 states and 539 transitions. [2022-03-15 19:17:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 19:17:58,921 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 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 20 [2022-03-15 19:17:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:17:58,922 INFO L225 Difference]: With dead ends: 232 [2022-03-15 19:17:58,922 INFO L226 Difference]: Without dead ends: 232 [2022-03-15 19:17:58,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 80 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=233, Invalid=1489, Unknown=0, NotChecked=0, Total=1722 [2022-03-15 19:17:58,923 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 63 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:17:58,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 46 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 698 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:17:58,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-03-15 19:17:58,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 142. [2022-03-15 19:17:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 2.3617021276595747) internal successors, (333), 141 states have internal predecessors, (333), 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) [2022-03-15 19:17:58,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 333 transitions. [2022-03-15 19:17:58,927 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 333 transitions. Word has length 20 [2022-03-15 19:17:58,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:17:58,928 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 333 transitions. [2022-03-15 19:17:58,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 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) [2022-03-15 19:17:58,928 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 333 transitions. [2022-03-15 19:17:58,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:17:58,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:17:58,928 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:17:58,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 19:17:59,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:59,136 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:17:59,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:17:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1393230103, now seen corresponding path program 18 times [2022-03-15 19:17:59,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:17:59,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996959455] [2022-03-15 19:17:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:17:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:17:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:17:59,338 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:59,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:17:59,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996959455] [2022-03-15 19:17:59,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996959455] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:17:59,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925489331] [2022-03-15 19:17:59,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:17:59,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:17:59,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:17:59,344 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:17:59,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 19:17:59,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 19:17:59,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:17:59,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:17:59,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:17:59,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:59,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:17:59,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:17:59,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925489331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:17:59,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:17:59,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-03-15 19:17:59,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [757505567] [2022-03-15 19:17:59,851 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:17:59,853 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:17:59,860 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 83 transitions. [2022-03-15 19:17:59,860 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:00,420 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [10404#(and (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= (+ ~N~0 thread1Thread1of1ForFork0_~i~0) (+ 4294967295 (* (div ~N~0 4294967296) 4294967296))) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (= |thread2Thread1of1ForFork1_~i~1#1| 0)) (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= 0 thread1Thread1of1ForFork0_~i~0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)))), 10405#(or (<= (mod ~N~0 4294967296) 1) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 10402#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 10354#(< (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296) (mod ~N~0 4294967296)), 10403#(and (or (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (= |thread2Thread1of1ForFork1_~i~1#1| 0)) (or (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (<= (+ ~N~0 thread1Thread1of1ForFork0_~i~0) (+ 4294967296 (* (div ~N~0 4294967296) 4294967296)))))] [2022-03-15 19:18:00,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:18:00,421 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:00,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:18:00,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2022-03-15 19:18:00,421 INFO L87 Difference]: Start difference. First operand 142 states and 333 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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) [2022-03-15 19:18:01,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:01,369 INFO L93 Difference]: Finished difference Result 312 states and 713 transitions. [2022-03-15 19:18:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 19:18:01,369 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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 20 [2022-03-15 19:18:01,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:01,371 INFO L225 Difference]: With dead ends: 312 [2022-03-15 19:18:01,371 INFO L226 Difference]: Without dead ends: 306 [2022-03-15 19:18:01,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=302, Invalid=2148, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 19:18:01,372 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 58 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:01,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 25 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:18:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-03-15 19:18:01,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 162. [2022-03-15 19:18:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.4658385093167703) internal successors, (397), 161 states have internal predecessors, (397), 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) [2022-03-15 19:18:01,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 397 transitions. [2022-03-15 19:18:01,377 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 397 transitions. Word has length 20 [2022-03-15 19:18:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:01,377 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 397 transitions. [2022-03-15 19:18:01,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 16 states have internal predecessors, (53), 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) [2022-03-15 19:18:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 397 transitions. [2022-03-15 19:18:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:18:01,378 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:01,378 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:01,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:01,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:01,578 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash -537923449, now seen corresponding path program 19 times [2022-03-15 19:18:01,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:01,580 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506155431] [2022-03-15 19:18:01,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:01,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:01,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:01,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506155431] [2022-03-15 19:18:01,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506155431] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:01,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481077899] [2022-03-15 19:18:01,684 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:18:01,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:01,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:01,688 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:01,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 19:18:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:01,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 19:18:01,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:02,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:02,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:02,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:02,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481077899] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:02,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:02,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 24 [2022-03-15 19:18:02,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2044888658] [2022-03-15 19:18:02,299 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:02,301 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:02,308 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 87 transitions. [2022-03-15 19:18:02,308 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:02,901 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [11236#(and (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= thread1Thread1of1ForFork0_~i~0 0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (= |thread2Thread1of1ForFork1_~i~1#1| 0)) (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= 0 thread1Thread1of1ForFork0_~i~0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)))), 11235#(and (or (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (= |thread2Thread1of1ForFork1_~i~1#1| 0)) (or (<= thread1Thread1of1ForFork0_~i~0 1) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)))), 11237#(or (<= (mod ~N~0 4294967296) 1) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 11234#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)))] [2022-03-15 19:18:02,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:18:02,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:18:02,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2022-03-15 19:18:02,902 INFO L87 Difference]: Start difference. First operand 162 states and 397 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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) [2022-03-15 19:18:04,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:04,315 INFO L93 Difference]: Finished difference Result 434 states and 951 transitions. [2022-03-15 19:18:04,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 19:18:04,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 20 [2022-03-15 19:18:04,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:04,317 INFO L225 Difference]: With dead ends: 434 [2022-03-15 19:18:04,317 INFO L226 Difference]: Without dead ends: 412 [2022-03-15 19:18:04,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=339, Invalid=2111, Unknown=0, NotChecked=0, Total=2450 [2022-03-15 19:18:04,318 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 57 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:04,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 24 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:18:04,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-03-15 19:18:04,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 148. [2022-03-15 19:18:04,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.3537414965986394) internal successors, (346), 147 states have internal predecessors, (346), 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) [2022-03-15 19:18:04,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 346 transitions. [2022-03-15 19:18:04,324 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 346 transitions. Word has length 20 [2022-03-15 19:18:04,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:04,324 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 346 transitions. [2022-03-15 19:18:04,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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) [2022-03-15 19:18:04,324 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 346 transitions. [2022-03-15 19:18:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 19:18:04,325 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:04,325 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:04,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:04,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:04,548 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:04,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:04,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1817720007, now seen corresponding path program 20 times [2022-03-15 19:18:04,549 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:04,549 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626490400] [2022-03-15 19:18:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:04,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:04,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:04,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:04,668 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626490400] [2022-03-15 19:18:04,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626490400] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:04,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552623465] [2022-03-15 19:18:04,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:18:04,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:04,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:04,672 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:04,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 19:18:04,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:18:04,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:04,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 19:18:04,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:04,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:05,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552623465] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:05,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:05,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-03-15 19:18:05,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1084610377] [2022-03-15 19:18:05,038 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:05,040 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:05,046 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 96 transitions. [2022-03-15 19:18:05,046 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:05,690 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [12177#(and (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= thread1Thread1of1ForFork0_~i~0 0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (= |thread2Thread1of1ForFork1_~i~1#1| 0)) (or (<= (mod ~N~0 4294967296) (mod (+ thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (<= 0 thread1Thread1of1ForFork0_~i~0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)))), 12174#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 12176#(and (or (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)) (= |thread2Thread1of1ForFork1_~i~1#1| 0)) (or (<= thread1Thread1of1ForFork0_~i~0 1) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296))) (or (<= 1 thread1Thread1of1ForFork0_~i~0) (<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)))), 12178#(or (<= (mod ~N~0 4294967296) 1) (= |thread2Thread1of1ForFork1_~i~1#1| 0)), 12175#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))] [2022-03-15 19:18:05,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:18:05,690 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:18:05,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-03-15 19:18:05,691 INFO L87 Difference]: Start difference. First operand 148 states and 346 transitions. Second operand has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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) [2022-03-15 19:18:07,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:07,254 INFO L93 Difference]: Finished difference Result 392 states and 855 transitions. [2022-03-15 19:18:07,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 19:18:07,255 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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 20 [2022-03-15 19:18:07,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:07,257 INFO L225 Difference]: With dead ends: 392 [2022-03-15 19:18:07,257 INFO L226 Difference]: Without dead ends: 376 [2022-03-15 19:18:07,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2022-03-15 19:18:07,258 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 69 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:07,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 28 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-15 19:18:07,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-03-15 19:18:07,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 152. [2022-03-15 19:18:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.357615894039735) internal successors, (356), 151 states have internal predecessors, (356), 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) [2022-03-15 19:18:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 356 transitions. [2022-03-15 19:18:07,263 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 356 transitions. Word has length 20 [2022-03-15 19:18:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:07,264 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 356 transitions. [2022-03-15 19:18:07,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.625) internal successors, (58), 16 states have internal predecessors, (58), 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) [2022-03-15 19:18:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 356 transitions. [2022-03-15 19:18:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:18:07,264 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:07,264 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:07,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:07,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 19:18:07,479 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:07,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:07,480 INFO L85 PathProgramCache]: Analyzing trace with hash -714811682, now seen corresponding path program 21 times [2022-03-15 19:18:07,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:07,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000284257] [2022-03-15 19:18:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:07,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:07,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000284257] [2022-03-15 19:18:07,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000284257] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:07,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139185961] [2022-03-15 19:18:07,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:18:07,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:07,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:07,595 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:07,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 19:18:07,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:18:07,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:07,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 19:18:07,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:18:07,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:18:07,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139185961] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:07,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:07,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-03-15 19:18:07,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2119560281] [2022-03-15 19:18:07,916 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:07,918 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:07,928 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 148 transitions. [2022-03-15 19:18:07,929 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:09,879 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [13072#(or (= ~counter~0 (+ (* (div (+ ~counter~0 (* (- 1) ~c~0)) 4294967296) 4294967296) ~c~0)) (<= (mod ~counter~0 4294967296) 0)), 13073#(or (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (= ~counter~0 (+ (* 2 ~c~0) (* (div (+ ~counter~0 (* (- 2) ~c~0)) 4294967296) 4294967296)))), 13074#(or (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (<= (mod (+ ~counter~0 (* 4294967294 ~c~0)) 4294967296) 0) (= ~counter~0 (+ (* (div (+ ~counter~0 (* ~c~0 (- 3))) 4294967296) 4294967296) (* 3 ~c~0)))), 13075#(or (<= (mod (+ ~counter~0 (* 4294967295 ~c~0)) 4294967296) 0) (<= (mod ~counter~0 4294967296) 0) (<= (mod (+ ~counter~0 (* 4294967294 ~c~0)) 4294967296) 0) (= ~counter~0 (+ (* (div (+ ~counter~0 (* ~c~0 (- 4))) 4294967296) 4294967296) (* ~c~0 4))) (<= (mod (+ ~counter~0 (* ~c~0 4294967293)) 4294967296) 0))] [2022-03-15 19:18:09,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:18:09,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:18:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:18:09,880 INFO L87 Difference]: Start difference. First operand 152 states and 356 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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) [2022-03-15 19:18:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:10,103 INFO L93 Difference]: Finished difference Result 291 states and 661 transitions. [2022-03-15 19:18:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:18:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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 21 [2022-03-15 19:18:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:10,105 INFO L225 Difference]: With dead ends: 291 [2022-03-15 19:18:10,105 INFO L226 Difference]: Without dead ends: 260 [2022-03-15 19:18:10,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:18:10,106 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:10,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 29 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:18:10,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-03-15 19:18:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 182. [2022-03-15 19:18:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.386740331491713) internal successors, (432), 181 states have internal predecessors, (432), 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) [2022-03-15 19:18:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 432 transitions. [2022-03-15 19:18:10,111 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 432 transitions. Word has length 21 [2022-03-15 19:18:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:10,111 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 432 transitions. [2022-03-15 19:18:10,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 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) [2022-03-15 19:18:10,111 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 432 transitions. [2022-03-15 19:18:10,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:10,112 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:10,112 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:10,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:10,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-03-15 19:18:10,317 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash 466673634, now seen corresponding path program 22 times [2022-03-15 19:18:10,318 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:10,318 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413721671] [2022-03-15 19:18:10,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:10,437 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:10,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413721671] [2022-03-15 19:18:10,437 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413721671] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:10,437 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058711748] [2022-03-15 19:18:10,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:18:10,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:10,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:10,440 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:10,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 19:18:10,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:18:10,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:10,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 19:18:10,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:10,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:11,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058711748] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:11,061 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:11,061 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 29 [2022-03-15 19:18:11,061 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [580139741] [2022-03-15 19:18:11,061 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:11,063 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:11,068 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 80 transitions. [2022-03-15 19:18:11,068 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:11,328 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [13887#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 13886#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 13888#(= thread1Thread1of1ForFork0_~i~0 0)] [2022-03-15 19:18:11,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:18:11,328 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:18:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2022-03-15 19:18:11,329 INFO L87 Difference]: Start difference. First operand 182 states and 432 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:18:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:12,230 INFO L93 Difference]: Finished difference Result 392 states and 882 transitions. [2022-03-15 19:18:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 19:18:12,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 19:18:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:12,232 INFO L225 Difference]: With dead ends: 392 [2022-03-15 19:18:12,232 INFO L226 Difference]: Without dead ends: 386 [2022-03-15 19:18:12,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 799 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=408, Invalid=2454, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 19:18:12,234 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 64 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:12,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 18 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:18:12,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-03-15 19:18:12,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 210. [2022-03-15 19:18:12,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.449760765550239) internal successors, (512), 209 states have internal predecessors, (512), 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) [2022-03-15 19:18:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 512 transitions. [2022-03-15 19:18:12,240 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 512 transitions. Word has length 22 [2022-03-15 19:18:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:12,240 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 512 transitions. [2022-03-15 19:18:12,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:18:12,240 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 512 transitions. [2022-03-15 19:18:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:12,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:12,241 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:12,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-03-15 19:18:12,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:12,446 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1321980288, now seen corresponding path program 23 times [2022-03-15 19:18:12,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:12,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778410528] [2022-03-15 19:18:12,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:12,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:18:12,574 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:12,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778410528] [2022-03-15 19:18:12,574 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778410528] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:12,574 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621145398] [2022-03-15 19:18:12,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:18:12,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:12,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:12,576 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:12,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 19:18:12,845 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-15 19:18:12,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:12,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 19:18:12,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:13,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:13,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621145398] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:13,251 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:13,251 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 28 [2022-03-15 19:18:13,251 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [817431997] [2022-03-15 19:18:13,251 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:13,253 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:13,258 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 84 transitions. [2022-03-15 19:18:13,258 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:13,563 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 3 new interpolants: [14923#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 14924#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 14925#(= thread1Thread1of1ForFork0_~i~0 0)] [2022-03-15 19:18:13,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 19:18:13,564 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:13,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 19:18:13,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=801, Unknown=0, NotChecked=0, Total=930 [2022-03-15 19:18:13,565 INFO L87 Difference]: Start difference. First operand 210 states and 512 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:18:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:14,246 INFO L93 Difference]: Finished difference Result 470 states and 1089 transitions. [2022-03-15 19:18:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 19:18:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 19:18:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:14,249 INFO L225 Difference]: With dead ends: 470 [2022-03-15 19:18:14,249 INFO L226 Difference]: Without dead ends: 458 [2022-03-15 19:18:14,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=277, Invalid=1793, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 19:18:14,250 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 66 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:14,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 16 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:18:14,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-15 19:18:14,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 206. [2022-03-15 19:18:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.448780487804878) internal successors, (502), 205 states have internal predecessors, (502), 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) [2022-03-15 19:18:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 502 transitions. [2022-03-15 19:18:14,277 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 502 transitions. Word has length 22 [2022-03-15 19:18:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:14,277 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 502 transitions. [2022-03-15 19:18:14,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:18:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 502 transitions. [2022-03-15 19:18:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:14,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:14,278 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:14,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:14,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:14,484 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2066682786, now seen corresponding path program 24 times [2022-03-15 19:18:14,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:14,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811513907] [2022-03-15 19:18:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:18:14,622 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:14,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811513907] [2022-03-15 19:18:14,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811513907] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:14,622 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123171475] [2022-03-15 19:18:14,623 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:18:14,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:14,628 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:14,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 19:18:14,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 19:18:14,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:14,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 19:18:14,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:14,952 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:14,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:15,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123171475] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:15,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:15,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 28 [2022-03-15 19:18:15,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2018688260] [2022-03-15 19:18:15,170 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:15,172 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:15,178 INFO L252 McrAutomatonBuilder]: Finished intersection with 56 states and 93 transitions. [2022-03-15 19:18:15,178 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:15,662 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [16010#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296))), 16011#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 16012#(= thread1Thread1of1ForFork0_~i~0 0), 16009#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)))] [2022-03-15 19:18:15,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 19:18:15,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 19:18:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2022-03-15 19:18:15,663 INFO L87 Difference]: Start difference. First operand 206 states and 502 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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) [2022-03-15 19:18:16,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:16,495 INFO L93 Difference]: Finished difference Result 422 states and 982 transitions. [2022-03-15 19:18:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 19:18:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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 22 [2022-03-15 19:18:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:16,497 INFO L225 Difference]: With dead ends: 422 [2022-03-15 19:18:16,498 INFO L226 Difference]: Without dead ends: 398 [2022-03-15 19:18:16,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 66 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=255, Invalid=1637, Unknown=0, NotChecked=0, Total=1892 [2022-03-15 19:18:16,499 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:16,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 18 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:18:16,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-03-15 19:18:16,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 186. [2022-03-15 19:18:16,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.389189189189189) internal successors, (442), 185 states have internal predecessors, (442), 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) [2022-03-15 19:18:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 442 transitions. [2022-03-15 19:18:16,504 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 442 transitions. Word has length 22 [2022-03-15 19:18:16,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:16,504 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 442 transitions. [2022-03-15 19:18:16,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 states have internal predecessors, (56), 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) [2022-03-15 19:18:16,505 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 442 transitions. [2022-03-15 19:18:16,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:16,505 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:16,505 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:16,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:16,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 19:18:16,728 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:16,729 INFO L85 PathProgramCache]: Analyzing trace with hash -617343552, now seen corresponding path program 25 times [2022-03-15 19:18:16,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:16,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467913690] [2022-03-15 19:18:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:16,882 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:16,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:16,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467913690] [2022-03-15 19:18:16,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467913690] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:16,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750052868] [2022-03-15 19:18:16,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:18:16,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:16,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:16,888 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:16,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 19:18:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:17,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 19:18:17,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:17,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:17,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750052868] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:17,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:17,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-03-15 19:18:17,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [448402543] [2022-03-15 19:18:17,400 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:17,402 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:17,408 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 102 transitions. [2022-03-15 19:18:17,408 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:18,070 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [17001#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (mod ~N~0 4294967296) (mod (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)) (<= (+ 4 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* (div (+ 3 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296) 4294967296)))), 17003#(= thread1Thread1of1ForFork0_~i~0 0), 16999#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 17002#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 17000#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))] [2022-03-15 19:18:18,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 19:18:18,070 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:18,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 19:18:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 19:18:18,071 INFO L87 Difference]: Start difference. First operand 186 states and 442 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 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) [2022-03-15 19:18:18,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:18,964 INFO L93 Difference]: Finished difference Result 352 states and 826 transitions. [2022-03-15 19:18:18,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 19:18:18,965 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 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 22 [2022-03-15 19:18:18,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:18,966 INFO L225 Difference]: With dead ends: 352 [2022-03-15 19:18:18,966 INFO L226 Difference]: Without dead ends: 336 [2022-03-15 19:18:18,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 69 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=258, Invalid=1722, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 19:18:18,966 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 67 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:18,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 20 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:18:18,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-03-15 19:18:18,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 178. [2022-03-15 19:18:18,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.3954802259887007) internal successors, (424), 177 states have internal predecessors, (424), 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) [2022-03-15 19:18:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 424 transitions. [2022-03-15 19:18:18,971 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 424 transitions. Word has length 22 [2022-03-15 19:18:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:18,972 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 424 transitions. [2022-03-15 19:18:18,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 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) [2022-03-15 19:18:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 424 transitions. [2022-03-15 19:18:18,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:18,972 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:18,972 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:18,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:19,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 19:18:19,178 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1758066368, now seen corresponding path program 26 times [2022-03-15 19:18:19,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:19,179 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113266875] [2022-03-15 19:18:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:19,314 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:19,314 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:19,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113266875] [2022-03-15 19:18:19,314 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113266875] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:19,314 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940845890] [2022-03-15 19:18:19,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:18:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:19,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:19,316 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:19,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 19:18:19,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:18:19,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:19,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 19:18:19,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:19,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:19,883 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:19,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940845890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:19,884 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:19,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-03-15 19:18:19,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1941345878] [2022-03-15 19:18:19,884 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:19,886 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:19,895 INFO L252 McrAutomatonBuilder]: Finished intersection with 62 states and 107 transitions. [2022-03-15 19:18:19,895 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:20,305 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [17909#(= thread1Thread1of1ForFork0_~i~0 0), 17905#(and (<= 4 thread1Thread1of1ForFork0_~i~0) (<= thread1Thread1of1ForFork0_~i~0 4)), 17904#(<= (mod ~N~0 4294967296) (mod thread1Thread1of1ForFork0_~i~0 4294967296)), 17907#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 17908#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 17906#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0))] [2022-03-15 19:18:20,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:18:20,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:20,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:18:20,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2022-03-15 19:18:20,306 INFO L87 Difference]: Start difference. First operand 178 states and 424 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 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) [2022-03-15 19:18:21,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:21,769 INFO L93 Difference]: Finished difference Result 540 states and 1217 transitions. [2022-03-15 19:18:21,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-15 19:18:21,770 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 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 22 [2022-03-15 19:18:21,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:21,772 INFO L225 Difference]: With dead ends: 540 [2022-03-15 19:18:21,772 INFO L226 Difference]: Without dead ends: 532 [2022-03-15 19:18:21,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 92 SyntacticMatches, 10 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=560, Invalid=3996, Unknown=0, NotChecked=0, Total=4556 [2022-03-15 19:18:21,773 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 63 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 1343 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:21,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 48 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1343 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:18:21,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2022-03-15 19:18:21,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 206. [2022-03-15 19:18:21,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 2.4585365853658536) internal successors, (504), 205 states have internal predecessors, (504), 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) [2022-03-15 19:18:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 504 transitions. [2022-03-15 19:18:21,778 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 504 transitions. Word has length 22 [2022-03-15 19:18:21,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:21,779 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 504 transitions. [2022-03-15 19:18:21,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 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) [2022-03-15 19:18:21,779 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 504 transitions. [2022-03-15 19:18:21,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:21,779 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:21,780 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:21,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:21,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 19:18:21,985 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:21,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:21,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1681594274, now seen corresponding path program 27 times [2022-03-15 19:18:21,986 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:21,986 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909924767] [2022-03-15 19:18:21,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:21,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:22,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:22,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909924767] [2022-03-15 19:18:22,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909924767] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:22,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645009857] [2022-03-15 19:18:22,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:18:22,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:22,148 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:22,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 19:18:22,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-15 19:18:22,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:22,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 19:18:22,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:22,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:22,655 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:22,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645009857] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:22,655 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:22,655 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 27 [2022-03-15 19:18:22,655 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270115907] [2022-03-15 19:18:22,655 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:22,657 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:22,664 INFO L252 McrAutomatonBuilder]: Finished intersection with 64 states and 111 transitions. [2022-03-15 19:18:22,664 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:23,109 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 6 new interpolants: [19125#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0)), 19128#(= thread1Thread1of1ForFork0_~i~0 0), 19127#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 19124#(and (<= 4 thread1Thread1of1ForFork0_~i~0) (<= thread1Thread1of1ForFork0_~i~0 4)), 19126#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 19123#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)))] [2022-03-15 19:18:23,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 19:18:23,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 19:18:23,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 19:18:23,110 INFO L87 Difference]: Start difference. First operand 206 states and 504 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 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) [2022-03-15 19:18:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:24,370 INFO L93 Difference]: Finished difference Result 568 states and 1318 transitions. [2022-03-15 19:18:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-15 19:18:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 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 22 [2022-03-15 19:18:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:24,373 INFO L225 Difference]: With dead ends: 568 [2022-03-15 19:18:24,373 INFO L226 Difference]: Without dead ends: 556 [2022-03-15 19:18:24,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 90 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=462, Invalid=3320, Unknown=0, NotChecked=0, Total=3782 [2022-03-15 19:18:24,374 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 82 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:24,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 40 Invalid, 1417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:18:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-03-15 19:18:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 202. [2022-03-15 19:18:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.45771144278607) internal successors, (494), 201 states have internal predecessors, (494), 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) [2022-03-15 19:18:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 494 transitions. [2022-03-15 19:18:24,383 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 494 transitions. Word has length 22 [2022-03-15 19:18:24,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:24,384 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 494 transitions. [2022-03-15 19:18:24,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 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) [2022-03-15 19:18:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 494 transitions. [2022-03-15 19:18:24,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:24,384 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:24,384 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:24,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:24,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 19:18:24,590 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:24,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash -936891776, now seen corresponding path program 28 times [2022-03-15 19:18:24,591 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:24,591 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159364279] [2022-03-15 19:18:24,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:24,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:24,726 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:24,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159364279] [2022-03-15 19:18:24,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159364279] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:24,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671920661] [2022-03-15 19:18:24,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:18:24,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:24,728 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:24,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 19:18:24,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:18:24,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:24,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 19:18:24,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:24,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:18:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:25,185 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671920661] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:18:25,185 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:18:25,185 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-03-15 19:18:25,185 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1646373542] [2022-03-15 19:18:25,185 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:18:25,187 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:18:25,194 INFO L252 McrAutomatonBuilder]: Finished intersection with 68 states and 120 transitions. [2022-03-15 19:18:25,194 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:18:25,823 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 7 new interpolants: [20350#(and (<= thread1Thread1of1ForFork0_~i~0 2) (<= 2 thread1Thread1of1ForFork0_~i~0)), 20346#(or (<= (+ 2 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))) (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296))), 20349#(and (<= thread1Thread1of1ForFork0_~i~0 3) (<= 3 thread1Thread1of1ForFork0_~i~0)), 20352#(= thread1Thread1of1ForFork0_~i~0 0), 20348#(and (<= 4 thread1Thread1of1ForFork0_~i~0) (<= thread1Thread1of1ForFork0_~i~0 4)), 20351#(and (<= thread1Thread1of1ForFork0_~i~0 1) (<= 1 thread1Thread1of1ForFork0_~i~0)), 20347#(or (<= (mod ~N~0 4294967296) (mod |thread2Thread1of1ForFork1_~i~1#1| 4294967296)) (<= (+ 3 |thread2Thread1of1ForFork1_~i~1#1| (* (div ~N~0 4294967296) 4294967296)) (+ ~N~0 (* 4294967296 (div (+ 2 |thread2Thread1of1ForFork1_~i~1#1|) 4294967296)))) (<= (mod ~N~0 4294967296) (mod (+ |thread2Thread1of1ForFork1_~i~1#1| 1) 4294967296)))] [2022-03-15 19:18:25,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 19:18:25,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:18:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 19:18:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 19:18:25,824 INFO L87 Difference]: Start difference. First operand 202 states and 494 transitions. Second operand has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 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) [2022-03-15 19:18:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:18:27,031 INFO L93 Difference]: Finished difference Result 554 states and 1314 transitions. [2022-03-15 19:18:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 19:18:27,031 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 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 22 [2022-03-15 19:18:27,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:18:27,033 INFO L225 Difference]: With dead ends: 554 [2022-03-15 19:18:27,033 INFO L226 Difference]: Without dead ends: 534 [2022-03-15 19:18:27,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 86 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=378, Invalid=2484, Unknown=0, NotChecked=0, Total=2862 [2022-03-15 19:18:27,034 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 983 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-03-15 19:18:27,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 44 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 983 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-03-15 19:18:27,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-03-15 19:18:27,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 204. [2022-03-15 19:18:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 2.458128078817734) internal successors, (499), 203 states have internal predecessors, (499), 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) [2022-03-15 19:18:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 499 transitions. [2022-03-15 19:18:27,039 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 499 transitions. Word has length 22 [2022-03-15 19:18:27,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:18:27,039 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 499 transitions. [2022-03-15 19:18:27,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.6) internal successors, (72), 20 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) [2022-03-15 19:18:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 499 transitions. [2022-03-15 19:18:27,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 19:18:27,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:18:27,040 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:18:27,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-15 19:18:27,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:27,241 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 19:18:27,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:18:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash 674049182, now seen corresponding path program 29 times [2022-03-15 19:18:27,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:18:27,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112343120] [2022-03-15 19:18:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:18:27,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:18:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:18:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:18:27,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:18:27,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112343120] [2022-03-15 19:18:27,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112343120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:18:27,386 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869136246] [2022-03-15 19:18:27,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:18:27,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:18:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:18:27,387 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 19:18:27,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 19:18:27,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 19:18:27,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:18:27,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 19:18:27,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:18:40,912 WARN L228 SmtUtils]: Spent 12.83s on a formula simplification. DAG size of input: 5113 DAG size of output: 4251 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-15 19:25:04,095 WARN L228 SmtUtils]: Spent 10.05s on a formula simplification. DAG size of input: 28 DAG size of output: 1 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-03-15 19:30:27,453 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 19:30:27,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:30:28,000 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. Received shutdown request... [2022-03-15 19:31:38,397 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:31:38,397 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 [2022-03-15 19:31:39,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-15 19:31:39,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown