/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-more-parray-copy.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 19:28:57,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 19:28:57,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 19:28:57,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 19:28:57,135 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 19:28:57,136 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 19:28:57,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 19:28:57,141 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 19:28:57,143 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 19:28:57,144 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 19:28:57,145 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 19:28:57,146 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 19:28:57,147 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 19:28:57,150 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 19:28:57,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 19:28:57,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 19:28:57,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 19:28:57,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 19:28:57,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 19:28:57,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 19:28:57,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 19:28:57,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 19:28:57,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 19:28:57,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 19:28:57,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 19:28:57,174 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 19:28:57,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 19:28:57,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 19:28:57,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 19:28:57,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 19:28:57,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 19:28:57,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 19:28:57,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 19:28:57,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 19:28:57,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 19:28:57,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 19:28:57,181 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 19:28:57,181 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 19:28:57,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 19:28:57,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 19:28:57,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 19:28:57,184 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 19:28:57,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 19:28:57,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 19:28:57,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 19:28:57,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 19:28:57,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 19:28:57,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 19:28:57,216 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 19:28:57,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 19:28:57,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 19:28:57,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 19:28:57,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 19:28:57,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 19:28:57,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 19:28:57,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 19:28:57,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 19:28:57,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 19:28:57,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 19:28:57,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 19:28:57,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 19:28:57,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 19:28:57,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 19:28:57,218 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 19:28:57,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 19:28:57,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:28:57,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 19:28:57,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 19:28:57,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 19:28:57,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 19:28:57,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 19:28:57,220 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 19:28:57,221 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 19:28:57,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 19:28:57,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 19:28:57,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 19:28:57,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 19:28:57,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 19:28:57,484 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 19:28:57,485 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 19:28:57,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-03-15 19:28:57,543 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41578a5b9/15edd5dee3af427ea74509aa67a7f06b/FLAG53e2c4b9a [2022-03-15 19:28:57,954 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 19:28:57,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-03-15 19:28:57,964 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41578a5b9/15edd5dee3af427ea74509aa67a7f06b/FLAG53e2c4b9a [2022-03-15 19:28:57,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41578a5b9/15edd5dee3af427ea74509aa67a7f06b [2022-03-15 19:28:57,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 19:28:57,988 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 19:28:57,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 19:28:57,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 19:28:57,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 19:28:57,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:28:57" (1/1) ... [2022-03-15 19:28:57,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3530b8f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:57, skipping insertion in model container [2022-03-15 19:28:57,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 07:28:57" (1/1) ... [2022-03-15 19:28:57,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 19:28:58,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 19:28:58,240 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-more-parray-copy.wvr.c[2385,2398] [2022-03-15 19:28:58,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:28:58,260 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 19:28:58,295 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-more-parray-copy.wvr.c[2385,2398] [2022-03-15 19:28:58,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 19:28:58,311 INFO L208 MainTranslator]: Completed translation [2022-03-15 19:28:58,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58 WrapperNode [2022-03-15 19:28:58,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 19:28:58,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 19:28:58,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 19:28:58,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 19:28:58,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,362 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2022-03-15 19:28:58,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 19:28:58,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 19:28:58,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 19:28:58,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 19:28:58,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,410 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 19:28:58,411 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 19:28:58,411 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 19:28:58,411 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 19:28:58,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (1/1) ... [2022-03-15 19:28:58,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 19:28:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:28:58,440 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 19:28:58,461 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 19:28:58,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 19:28:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-15 19:28:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-15 19:28:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-15 19:28:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-15 19:28:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-03-15 19:28:58,480 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-03-15 19:28:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 19:28:58,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 19:28:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 19:28:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-15 19:28:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 19:28:58,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 19:28:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 19:28:58,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 19:28:58,482 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 19:28:58,583 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 19:28:58,585 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 19:28:58,808 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 19:28:58,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 19:28:58,817 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-03-15 19:28:58,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:28:58 BoogieIcfgContainer [2022-03-15 19:28:58,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 19:28:58,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 19:28:58,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 19:28:58,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 19:28:58,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 07:28:57" (1/3) ... [2022-03-15 19:28:58,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2d22a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:28:58, skipping insertion in model container [2022-03-15 19:28:58,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 07:28:58" (2/3) ... [2022-03-15 19:28:58,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f2d22a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 07:28:58, skipping insertion in model container [2022-03-15 19:28:58,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 07:28:58" (3/3) ... [2022-03-15 19:28:58,840 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-03-15 19:28:58,844 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 19:28:58,844 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 19:28:58,844 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 19:28:58,844 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 19:28:58,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,920 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,921 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,922 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,922 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,923 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,923 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,923 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,924 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,924 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,924 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,925 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,925 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,925 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,925 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,926 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,926 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,927 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,927 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,927 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,927 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,928 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,928 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,928 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,929 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,929 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,929 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,930 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,930 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,930 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,931 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,931 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,931 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,932 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,932 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,932 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,932 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,932 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,933 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,933 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,933 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,933 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,933 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,934 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,934 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,934 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,935 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,940 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,941 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,954 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,955 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,955 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,955 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,956 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,956 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,956 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,959 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,959 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,961 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,961 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,962 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,962 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,962 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,963 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 19:28:58,967 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-03-15 19:28:59,007 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 19:28:59,013 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 19:28:59,013 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-03-15 19:28:59,026 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 19:28:59,034 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 212 transitions, 448 flow [2022-03-15 19:28:59,036 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 212 transitions, 448 flow [2022-03-15 19:28:59,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2022-03-15 19:28:59,147 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2022-03-15 19:28:59,148 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-03-15 19:28:59,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-03-15 19:28:59,159 INFO L116 LiptonReduction]: Number of co-enabled transitions 1728 [2022-03-15 19:29:04,316 INFO L131 LiptonReduction]: Checked pairs total: 2710 [2022-03-15 19:29:04,317 INFO L133 LiptonReduction]: Total number of compositions: 214 [2022-03-15 19:29:04,330 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 38 places, 33 transitions, 90 flow [2022-03-15 19:29:04,361 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 214 states, 213 states have (on average 3.192488262910798) internal successors, (680), 213 states have internal predecessors, (680), 0 states have call successors, (0), 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 19:29:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 214 states, 213 states have (on average 3.192488262910798) internal successors, (680), 213 states have internal predecessors, (680), 0 states have call successors, (0), 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 19:29:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 19:29:04,373 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:04,373 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:04,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:04,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:04,377 INFO L85 PathProgramCache]: Analyzing trace with hash 666866047, now seen corresponding path program 1 times [2022-03-15 19:29:04,390 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:04,391 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742546708] [2022-03-15 19:29:04,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:04,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:04,714 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 19:29:04,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:04,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742546708] [2022-03-15 19:29:04,715 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742546708] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 19:29:04,715 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 19:29:04,715 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 19:29:04,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1266971619] [2022-03-15 19:29:04,717 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:04,722 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:04,779 INFO L252 McrAutomatonBuilder]: Finished intersection with 108 states and 245 transitions. [2022-03-15 19:29:04,780 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:05,504 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:29:05,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 19:29:05,505 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:05,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 19:29:05,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-15 19:29:05,528 INFO L87 Difference]: Start difference. First operand has 214 states, 213 states have (on average 3.192488262910798) internal successors, (680), 213 states have internal predecessors, (680), 0 states have call successors, (0), 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 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 19:29:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:05,612 INFO L93 Difference]: Finished difference Result 217 states and 684 transitions. [2022-03-15 19:29:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 19:29:05,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 19:29:05,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:05,622 INFO L225 Difference]: With dead ends: 217 [2022-03-15 19:29:05,622 INFO L226 Difference]: Without dead ends: 216 [2022-03-15 19:29:05,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-15 19:29:05,625 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:05,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:29:05,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-03-15 19:29:05,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-03-15 19:29:05,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 3.172093023255814) internal successors, (682), 215 states have internal predecessors, (682), 0 states have call successors, (0), 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 19:29:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 682 transitions. [2022-03-15 19:29:05,674 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 682 transitions. Word has length 21 [2022-03-15 19:29:05,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:05,675 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 682 transitions. [2022-03-15 19:29:05,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 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 19:29:05,675 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 682 transitions. [2022-03-15 19:29:05,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 19:29:05,678 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:05,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:05,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 19:29:05,678 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:05,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:05,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1668250089, now seen corresponding path program 1 times [2022-03-15 19:29:05,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:05,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122425741] [2022-03-15 19:29:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:05,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:05,804 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 19:29:05,804 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:05,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122425741] [2022-03-15 19:29:05,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122425741] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:05,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168309635] [2022-03-15 19:29:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:05,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:05,807 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 19:29:05,820 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 19:29:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:05,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:29:05,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:06,060 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 19:29:06,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:06,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168309635] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:06,191 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 19:29:06,191 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 13 [2022-03-15 19:29:06,191 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [124468872] [2022-03-15 19:29:06,192 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:06,196 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:06,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 110 states and 247 transitions. [2022-03-15 19:29:06,221 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:07,063 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 5 new interpolants: [1437#(< thread2Thread1of1ForFork0_~i~1 ~M~0), 1440#(< 0 ~M~0), 1439#(or (< ~M~0 ~N~0) (< thread2Thread1of1ForFork0_~i~1 ~M~0)), 1438#(< ~M~0 ~N~0), 1441#(or (< 0 ~M~0) (< ~M~0 ~N~0))] [2022-03-15 19:29:07,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:29:07,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:07,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:29:07,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:29:07,065 INFO L87 Difference]: Start difference. First operand 216 states and 682 transitions. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 11 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:29:07,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:07,240 INFO L93 Difference]: Finished difference Result 258 states and 822 transitions. [2022-03-15 19:29:07,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 19:29:07,240 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 11 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-15 19:29:07,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:07,243 INFO L225 Difference]: With dead ends: 258 [2022-03-15 19:29:07,243 INFO L226 Difference]: Without dead ends: 258 [2022-03-15 19:29:07,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2022-03-15 19:29:07,245 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 82 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:07,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 15 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:29:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-15 19:29:07,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2022-03-15 19:29:07,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.198443579766537) internal successors, (822), 257 states have internal predecessors, (822), 0 states have call successors, (0), 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 19:29:07,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 822 transitions. [2022-03-15 19:29:07,261 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 822 transitions. Word has length 23 [2022-03-15 19:29:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:07,261 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 822 transitions. [2022-03-15 19:29:07,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 11 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:29:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 822 transitions. [2022-03-15 19:29:07,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 19:29:07,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:07,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:07,290 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 19:29:07,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:07,478 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash -36851348, now seen corresponding path program 1 times [2022-03-15 19:29:07,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:07,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476998354] [2022-03-15 19:29:07,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:07,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:07,593 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:07,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476998354] [2022-03-15 19:29:07,594 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476998354] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:07,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373902853] [2022-03-15 19:29:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:07,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:07,596 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 19:29:07,597 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 19:29:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:07,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 19:29:07,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:07,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:07,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373902853] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:07,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-15 19:29:07,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-03-15 19:29:07,833 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [867798372] [2022-03-15 19:29:07,833 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:07,839 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:07,869 INFO L252 McrAutomatonBuilder]: Finished intersection with 111 states and 239 transitions. [2022-03-15 19:29:07,869 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:08,351 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:29:08,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 19:29:08,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 19:29:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-03-15 19:29:08,352 INFO L87 Difference]: Start difference. First operand 258 states and 822 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 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 19:29:08,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:08,416 INFO L93 Difference]: Finished difference Result 308 states and 990 transitions. [2022-03-15 19:29:08,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 19:29:08,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 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 25 [2022-03-15 19:29:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:08,421 INFO L225 Difference]: With dead ends: 308 [2022-03-15 19:29:08,421 INFO L226 Difference]: Without dead ends: 308 [2022-03-15 19:29:08,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 7 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-03-15 19:29:08,425 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:08,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 7 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 19:29:08,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-15 19:29:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-03-15 19:29:08,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.224755700325733) internal successors, (990), 307 states have internal predecessors, (990), 0 states have call successors, (0), 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 19:29:08,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 990 transitions. [2022-03-15 19:29:08,454 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 990 transitions. Word has length 25 [2022-03-15 19:29:08,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:08,455 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 990 transitions. [2022-03-15 19:29:08,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 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 19:29:08,455 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 990 transitions. [2022-03-15 19:29:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:29:08,457 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:08,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:08,482 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 19:29:08,657 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,SelfDestructingSolverStorable2 [2022-03-15 19:29:08,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:08,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1562861200, now seen corresponding path program 1 times [2022-03-15 19:29:08,661 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:08,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334807046] [2022-03-15 19:29:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:08,896 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:08,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334807046] [2022-03-15 19:29:08,896 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334807046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:08,896 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258628543] [2022-03-15 19:29:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:08,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:08,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:08,898 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 19:29:08,925 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 19:29:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:09,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-15 19:29:09,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:09,064 INFO L353 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-03-15 19:29:09,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-03-15 19:29:09,134 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 19:29:09,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 19:29:09,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-03-15 19:29:09,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:09,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:10,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:10,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 98 [2022-03-15 19:29:10,500 INFO L353 Elim1Store]: treesize reduction 22, result has 55.1 percent of original size [2022-03-15 19:29:10,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 111 treesize of output 101 [2022-03-15 19:29:10,527 INFO L353 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-03-15 19:29:10,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 1 [2022-03-15 19:29:10,534 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-03-15 19:29:10,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 1 [2022-03-15 19:29:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:12,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258628543] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:12,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:12,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 20 [2022-03-15 19:29:12,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1369066274] [2022-03-15 19:29:12,398 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:12,403 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:12,430 INFO L252 McrAutomatonBuilder]: Finished intersection with 106 states and 221 transitions. [2022-03-15 19:29:12,431 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:14,713 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:29:14,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:29:14,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:29:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=346, Unknown=3, NotChecked=0, Total=462 [2022-03-15 19:29:14,714 INFO L87 Difference]: Start difference. First operand 308 states and 990 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 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 19:29:15,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:15,035 INFO L93 Difference]: Finished difference Result 1218 states and 3942 transitions. [2022-03-15 19:29:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 19:29:15,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 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 27 [2022-03-15 19:29:15,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:15,042 INFO L225 Difference]: With dead ends: 1218 [2022-03-15 19:29:15,042 INFO L226 Difference]: Without dead ends: 1211 [2022-03-15 19:29:15,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 112 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=198, Invalid=555, Unknown=3, NotChecked=0, Total=756 [2022-03-15 19:29:15,043 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 123 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:15,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 40 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:29:15,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2022-03-15 19:29:15,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 482. [2022-03-15 19:29:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.286902286902287) internal successors, (1581), 481 states have internal predecessors, (1581), 0 states have call successors, (0), 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 19:29:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1581 transitions. [2022-03-15 19:29:15,064 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1581 transitions. Word has length 27 [2022-03-15 19:29:15,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:15,064 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1581 transitions. [2022-03-15 19:29:15,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 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 19:29:15,065 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1581 transitions. [2022-03-15 19:29:15,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:29:15,066 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:15,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:15,095 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 19:29:15,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:15,279 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:15,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash -481292656, now seen corresponding path program 2 times [2022-03-15 19:29:15,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:15,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955163352] [2022-03-15 19:29:15,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:15,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:15,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:15,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955163352] [2022-03-15 19:29:15,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955163352] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:15,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909410574] [2022-03-15 19:29:15,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:29:15,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:15,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:15,705 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 19:29:15,714 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 19:29:15,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:29:15,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:15,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 19:29:15,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:15,860 INFO L353 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-03-15 19:29:15,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-03-15 19:29:15,926 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 19:29:15,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 19:29:16,175 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:29:16,266 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2022-03-15 19:29:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:16,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:16,670 INFO L353 Elim1Store]: treesize reduction 26, result has 53.6 percent of original size [2022-03-15 19:29:16,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 83 [2022-03-15 19:29:18,918 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:18,918 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 60 [2022-03-15 19:29:18,934 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:18,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 80 [2022-03-15 19:29:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:20,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909410574] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:20,183 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:20,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 23 [2022-03-15 19:29:20,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [990755958] [2022-03-15 19:29:20,184 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:20,189 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:20,216 INFO L252 McrAutomatonBuilder]: Finished intersection with 104 states and 221 transitions. [2022-03-15 19:29:20,217 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:24,244 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [5857#(and (or (not (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (<= (+ (* thread3Thread1of1ForFork1_~i~2 4) ~B~0.offset) 0)) (or (not (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (= ~B~0.offset 0)) (or (not (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (<= 1 ~N~0)) (or (not (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (= ~A~0.offset 0)) (or (not (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (<= ~N~0 1) (not (= (+ (* thread3Thread1of1ForFork1_~i~2 4) ~A~0.offset) 0))) (or (not (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (not (= ~A~0.base ~B~0.base)) (not (= (+ (* thread3Thread1of1ForFork1_~i~2 4) ~A~0.offset) 0)))), 5858#(and (or (= (select (select |#memory_int| ~B~0.base) 0) (select (select |#memory_int| ~A~0.base) 0)) (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (or (< thread3Thread1of1ForFork1_~i~2 ~N~0) (<= ~N~0 1)) (or (= ~B~0.offset 0) (< thread3Thread1of1ForFork1_~i~2 ~N~0)) (or (= ~A~0.offset 0) (< thread3Thread1of1ForFork1_~i~2 ~N~0)))] [2022-03-15 19:29:24,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:29:24,244 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:29:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=612, Unknown=6, NotChecked=0, Total=702 [2022-03-15 19:29:24,245 INFO L87 Difference]: Start difference. First operand 482 states and 1581 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 19:29:24,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:24,886 INFO L93 Difference]: Finished difference Result 1187 states and 3874 transitions. [2022-03-15 19:29:24,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 19:29:24,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 27 [2022-03-15 19:29:24,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:24,894 INFO L225 Difference]: With dead ends: 1187 [2022-03-15 19:29:24,894 INFO L226 Difference]: Without dead ends: 1154 [2022-03-15 19:29:24,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 84 SyntacticMatches, 26 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=191, Invalid=993, Unknown=6, NotChecked=0, Total=1190 [2022-03-15 19:29:24,895 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 194 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:24,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 50 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:29:24,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-03-15 19:29:24,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 628. [2022-03-15 19:29:24,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 3.314194577352472) internal successors, (2078), 627 states have internal predecessors, (2078), 0 states have call successors, (0), 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 19:29:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 2078 transitions. [2022-03-15 19:29:24,917 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 2078 transitions. Word has length 27 [2022-03-15 19:29:24,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:24,917 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 2078 transitions. [2022-03-15 19:29:24,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 19:29:24,918 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 2078 transitions. [2022-03-15 19:29:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:29:24,920 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:24,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:24,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-15 19:29:25,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:25,135 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1959023598, now seen corresponding path program 3 times [2022-03-15 19:29:25,138 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:25,138 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229714542] [2022-03-15 19:29:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:25,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:25,408 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:25,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229714542] [2022-03-15 19:29:25,408 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229714542] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:25,408 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395137176] [2022-03-15 19:29:25,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:29:25,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:25,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:25,410 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 19:29:25,435 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 19:29:25,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-15 19:29:25,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:25,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 19:29:25,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:25,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:25,604 INFO L353 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2022-03-15 19:29:25,604 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2022-03-15 19:29:25,730 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 19:29:25,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 19:29:25,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:25,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:29:25,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:29:25,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-03-15 19:29:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:26,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:28,782 INFO L353 Elim1Store]: treesize reduction 26, result has 53.6 percent of original size [2022-03-15 19:29:28,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 83 [2022-03-15 19:29:30,969 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:30,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 110 [2022-03-15 19:29:30,982 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:30,982 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 106 treesize of output 112 [2022-03-15 19:29:30,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-03-15 19:29:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:31,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395137176] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:31,344 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:31,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 25 [2022-03-15 19:29:31,344 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [962666955] [2022-03-15 19:29:31,344 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:31,347 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:31,367 INFO L252 McrAutomatonBuilder]: Finished intersection with 80 states and 148 transitions. [2022-03-15 19:29:31,367 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:32,976 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [8502#(and (or (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0) (<= ~N~0 1)) (or (= ~A~0.offset 0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0)) (or (= ~B~0.offset 0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0)) (or (and (or (= |thread1Thread1of1ForFork2_#t~mem2| (select (select |#memory_int| ~A~0.base) 0)) (= ~A~0.base ~B~0.base)) (= (+ (* thread1Thread1of1ForFork2_~i~0 4) ~B~0.offset) 0)) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0) (and (= (select (select |#memory_int| ~B~0.base) 0) (select (select |#memory_int| ~A~0.base) 0)) (not (= (+ (* thread1Thread1of1ForFork2_~i~0 4) ~B~0.offset) 0))))), 8501#(and (or (< thread1Thread1of1ForFork2_~i~0 ~N~0) (<= ~N~0 1)) (or (= ~A~0.offset 0) (< thread1Thread1of1ForFork2_~i~0 ~N~0)) (or (= ~B~0.offset 0) (< thread1Thread1of1ForFork2_~i~0 ~N~0)) (or (= (select (select |#memory_int| ~B~0.base) 0) (select (select |#memory_int| ~A~0.base) 0)) (< thread1Thread1of1ForFork2_~i~0 ~N~0)))] [2022-03-15 19:29:32,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:29:32,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:32,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:29:32,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=696, Unknown=13, NotChecked=0, Total=812 [2022-03-15 19:29:32,977 INFO L87 Difference]: Start difference. First operand 628 states and 2078 transitions. Second operand has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 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 19:29:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:33,482 INFO L93 Difference]: Finished difference Result 1242 states and 4055 transitions. [2022-03-15 19:29:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:29:33,482 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 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 27 [2022-03-15 19:29:33,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:33,490 INFO L225 Difference]: With dead ends: 1242 [2022-03-15 19:29:33,490 INFO L226 Difference]: Without dead ends: 1198 [2022-03-15 19:29:33,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=189, Invalid=1058, Unknown=13, NotChecked=0, Total=1260 [2022-03-15 19:29:33,491 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 142 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:33,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 65 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:29:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-03-15 19:29:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 637. [2022-03-15 19:29:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 3.339622641509434) internal successors, (2124), 636 states have internal predecessors, (2124), 0 states have call successors, (0), 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 19:29:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 2124 transitions. [2022-03-15 19:29:33,512 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 2124 transitions. Word has length 27 [2022-03-15 19:29:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:33,514 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 2124 transitions. [2022-03-15 19:29:33,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 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 19:29:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 2124 transitions. [2022-03-15 19:29:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 19:29:33,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:33,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:33,544 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 19:29:33,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:33,736 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:33,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:33,736 INFO L85 PathProgramCache]: Analyzing trace with hash 607197550, now seen corresponding path program 4 times [2022-03-15 19:29:33,737 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:33,737 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367408055] [2022-03-15 19:29:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:33,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:34,035 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:34,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367408055] [2022-03-15 19:29:34,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367408055] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:34,035 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198187803] [2022-03-15 19:29:34,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 19:29:34,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:34,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:34,036 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 19:29:34,037 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 19:29:34,126 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 19:29:34,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:34,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 19:29:34,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:34,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:34,173 INFO L353 Elim1Store]: treesize reduction 63, result has 32.3 percent of original size [2022-03-15 19:29:34,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 77 [2022-03-15 19:29:34,242 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 19:29:34,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 19:29:34,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:34,379 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:29:34,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:29:34,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-03-15 19:29:34,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-03-15 19:29:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:34,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:36,170 INFO L353 Elim1Store]: treesize reduction 26, result has 53.6 percent of original size [2022-03-15 19:29:36,170 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 83 [2022-03-15 19:29:37,578 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:37,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 412 treesize of output 404 [2022-03-15 19:29:37,598 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:29:37,598 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 400 treesize of output 298 [2022-03-15 19:29:37,606 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2022-03-15 19:29:37,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 222 treesize of output 198 [2022-03-15 19:29:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:38,046 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198187803] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:38,046 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:38,046 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 10] total 27 [2022-03-15 19:29:38,046 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1675953276] [2022-03-15 19:29:38,046 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:38,049 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:38,064 INFO L252 McrAutomatonBuilder]: Finished intersection with 73 states and 134 transitions. [2022-03-15 19:29:38,064 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:39,484 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [11219#(and (or (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0) (<= ~N~0 1)) (or (= ~A~0.offset 0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0)) (or (= ~B~0.offset 0) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0)) (or (and (or (= |thread1Thread1of1ForFork2_#t~mem2| (select (select |#memory_int| ~A~0.base) 0)) (= ~A~0.base ~B~0.base)) (= (+ (* thread1Thread1of1ForFork2_~i~0 4) ~B~0.offset) 0)) (< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0) (and (= (select (select |#memory_int| ~B~0.base) 0) (select (select |#memory_int| ~A~0.base) 0)) (not (= (+ (* thread1Thread1of1ForFork2_~i~0 4) ~B~0.offset) 0))))), 11218#(and (or (< thread1Thread1of1ForFork2_~i~0 ~N~0) (<= ~N~0 1)) (or (= ~A~0.offset 0) (< thread1Thread1of1ForFork2_~i~0 ~N~0)) (or (= ~B~0.offset 0) (< thread1Thread1of1ForFork2_~i~0 ~N~0)) (or (= (select (select |#memory_int| ~B~0.base) 0) (select (select |#memory_int| ~A~0.base) 0)) (< thread1Thread1of1ForFork2_~i~0 ~N~0)))] [2022-03-15 19:29:39,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 19:29:39,485 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:39,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 19:29:39,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=790, Unknown=22, NotChecked=0, Total=930 [2022-03-15 19:29:39,486 INFO L87 Difference]: Start difference. First operand 637 states and 2124 transitions. Second operand has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 19:29:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:40,057 INFO L93 Difference]: Finished difference Result 1215 states and 3972 transitions. [2022-03-15 19:29:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 19:29:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 27 [2022-03-15 19:29:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:40,065 INFO L225 Difference]: With dead ends: 1215 [2022-03-15 19:29:40,065 INFO L226 Difference]: Without dead ends: 1181 [2022-03-15 19:29:40,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=211, Invalid=1173, Unknown=22, NotChecked=0, Total=1406 [2022-03-15 19:29:40,066 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 152 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:40,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 68 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-15 19:29:40,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-03-15 19:29:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 638. [2022-03-15 19:29:40,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 3.337519623233909) internal successors, (2126), 637 states have internal predecessors, (2126), 0 states have call successors, (0), 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 19:29:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2126 transitions. [2022-03-15 19:29:40,089 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2126 transitions. Word has length 27 [2022-03-15 19:29:40,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:40,089 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2126 transitions. [2022-03-15 19:29:40,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 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 19:29:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2126 transitions. [2022-03-15 19:29:40,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 19:29:40,091 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:40,091 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:40,119 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 19:29:40,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:40,304 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:40,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:40,305 INFO L85 PathProgramCache]: Analyzing trace with hash -585724163, now seen corresponding path program 5 times [2022-03-15 19:29:40,306 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:40,306 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382138089] [2022-03-15 19:29:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:40,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:40,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:40,417 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:40,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382138089] [2022-03-15 19:29:40,417 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382138089] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:40,417 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194963344] [2022-03-15 19:29:40,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 19:29:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:40,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:40,418 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 19:29:40,419 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 19:29:40,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:29:40,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:40,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:29:40,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:40,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:40,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194963344] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:40,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:40,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-03-15 19:29:40,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1114261390] [2022-03-15 19:29:40,651 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:40,655 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:40,677 INFO L252 McrAutomatonBuilder]: Finished intersection with 107 states and 222 transitions. [2022-03-15 19:29:40,678 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:40,994 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:29:40,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 19:29:40,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 19:29:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:29:40,996 INFO L87 Difference]: Start difference. First operand 638 states and 2126 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 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 19:29:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:41,117 INFO L93 Difference]: Finished difference Result 1005 states and 3343 transitions. [2022-03-15 19:29:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 19:29:41,118 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 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 28 [2022-03-15 19:29:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:41,124 INFO L225 Difference]: With dead ends: 1005 [2022-03-15 19:29:41,124 INFO L226 Difference]: Without dead ends: 1005 [2022-03-15 19:29:41,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-03-15 19:29:41,125 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 79 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:41,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 15 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:29:41,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-03-15 19:29:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 639. [2022-03-15 19:29:41,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 3.333855799373041) internal successors, (2127), 638 states have internal predecessors, (2127), 0 states have call successors, (0), 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 19:29:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 2127 transitions. [2022-03-15 19:29:41,143 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 2127 transitions. Word has length 28 [2022-03-15 19:29:41,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:41,143 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 2127 transitions. [2022-03-15 19:29:41,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 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 19:29:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 2127 transitions. [2022-03-15 19:29:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:29:41,145 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:41,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:41,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 19:29:41,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:41,360 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:41,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1680044499, now seen corresponding path program 1 times [2022-03-15 19:29:41,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:41,361 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131245120] [2022-03-15 19:29:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:41,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:41,465 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:41,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131245120] [2022-03-15 19:29:41,466 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131245120] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:41,466 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572063712] [2022-03-15 19:29:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:41,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:41,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:41,467 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 19:29:41,475 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 19:29:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:41,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 19:29:41,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:41,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:41,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-15 19:29:41,749 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572063712] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:41,750 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:41,750 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-03-15 19:29:41,750 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [579559959] [2022-03-15 19:29:41,751 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:41,755 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:41,771 INFO L252 McrAutomatonBuilder]: Finished intersection with 68 states and 114 transitions. [2022-03-15 19:29:41,771 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:42,211 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 14 new interpolants: [16375#(< (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0), 16380#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0) (<= ~M~0 thread2Thread1of1ForFork0_~i~1)), 16382#(or (< (+ ~M~0 1) ~N~0) (<= ~N~0 ~M~0) (<= ~M~0 thread2Thread1of1ForFork0_~i~1)), 16378#(<= ~N~0 thread3Thread1of1ForFork1_~i~2), 16379#(<= ~N~0 ~M~0), 16386#(and (or (= thread2Thread1of1ForFork0_~i~1 0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)) (or (<= ~M~0 0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2))), 16376#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)), 16384#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0) (<= ~M~0 0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)), 16377#(or (< (+ ~M~0 1) ~N~0) (<= ~N~0 ~M~0)), 16381#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2) (<= ~M~0 thread2Thread1of1ForFork0_~i~1)), 16387#(and (or (<= ~N~0 ~M~0) (<= ~M~0 0)) (or (= thread2Thread1of1ForFork0_~i~1 0) (<= ~N~0 ~M~0))), 16383#(or (< (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0) (<= ~M~0 0)), 16374#(< thread3Thread1of1ForFork1_~i~2 ~N~0), 16385#(or (< (+ ~M~0 1) ~N~0) (<= ~N~0 ~M~0) (<= ~M~0 0))] [2022-03-15 19:29:42,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 19:29:42,211 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 19:29:42,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2022-03-15 19:29:42,212 INFO L87 Difference]: Start difference. First operand 639 states and 2127 transitions. Second operand has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 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 19:29:43,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:43,025 INFO L93 Difference]: Finished difference Result 667 states and 1999 transitions. [2022-03-15 19:29:43,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 19:29:43,025 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 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 29 [2022-03-15 19:29:43,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:43,028 INFO L225 Difference]: With dead ends: 667 [2022-03-15 19:29:43,028 INFO L226 Difference]: Without dead ends: 601 [2022-03-15 19:29:43,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=389, Invalid=1681, Unknown=0, NotChecked=0, Total=2070 [2022-03-15 19:29:43,029 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 202 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:43,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 164 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 19:29:43,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-03-15 19:29:43,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 495. [2022-03-15 19:29:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 3.125506072874494) internal successors, (1544), 494 states have internal predecessors, (1544), 0 states have call successors, (0), 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 19:29:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1544 transitions. [2022-03-15 19:29:43,041 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1544 transitions. Word has length 29 [2022-03-15 19:29:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:43,041 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 1544 transitions. [2022-03-15 19:29:43,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.772727272727273) internal successors, (83), 21 states have internal predecessors, (83), 0 states have call successors, (0), 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 19:29:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1544 transitions. [2022-03-15 19:29:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:29:43,043 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:43,043 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:43,068 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 19:29:43,259 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,SelfDestructingSolverStorable8 [2022-03-15 19:29:43,259 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:43,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:43,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1784086924, now seen corresponding path program 6 times [2022-03-15 19:29:43,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:43,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883008720] [2022-03-15 19:29:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:43,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:43,319 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:43,319 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:43,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883008720] [2022-03-15 19:29:43,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883008720] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:43,319 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786117814] [2022-03-15 19:29:43,319 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 19:29:43,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:43,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:43,321 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 19:29:43,347 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 19:29:43,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-15 19:29:43,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:43,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:29:43,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:43,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:43,592 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-15 19:29:43,592 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786117814] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:43,592 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:43,593 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-03-15 19:29:43,593 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [355004718] [2022-03-15 19:29:43,593 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:43,599 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:43,632 INFO L252 McrAutomatonBuilder]: Finished intersection with 121 states and 261 transitions. [2022-03-15 19:29:43,633 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:44,296 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [18260#(< (+ thread1Thread1of1ForFork2_~i~0 1) ~N~0), 18259#(< thread1Thread1of1ForFork2_~i~0 ~N~0)] [2022-03-15 19:29:44,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 19:29:44,296 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:44,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 19:29:44,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-03-15 19:29:44,297 INFO L87 Difference]: Start difference. First operand 495 states and 1544 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:29:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:44,507 INFO L93 Difference]: Finished difference Result 429 states and 1305 transitions. [2022-03-15 19:29:44,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 19:29:44,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-15 19:29:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:44,508 INFO L225 Difference]: With dead ends: 429 [2022-03-15 19:29:44,508 INFO L226 Difference]: Without dead ends: 310 [2022-03-15 19:29:44,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-03-15 19:29:44,509 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 65 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:44,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 58 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 19:29:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-03-15 19:29:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2022-03-15 19:29:44,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.2103559870550162) internal successors, (992), 309 states have internal predecessors, (992), 0 states have call successors, (0), 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 19:29:44,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 992 transitions. [2022-03-15 19:29:44,516 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 992 transitions. Word has length 29 [2022-03-15 19:29:44,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:44,517 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 992 transitions. [2022-03-15 19:29:44,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:29:44,517 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 992 transitions. [2022-03-15 19:29:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 19:29:44,518 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:44,518 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:44,546 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 19:29:44,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 19:29:44,731 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1036245048, now seen corresponding path program 7 times [2022-03-15 19:29:44,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:44,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461115578] [2022-03-15 19:29:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:44,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:29:44,836 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:44,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461115578] [2022-03-15 19:29:44,836 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461115578] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:44,836 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862960096] [2022-03-15 19:29:44,836 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 19:29:44,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:44,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:44,840 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 19:29:44,845 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 19:29:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:44,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 19:29:44,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:29:45,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-15 19:29:45,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862960096] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:45,165 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:45,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-03-15 19:29:45,166 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [171142730] [2022-03-15 19:29:45,166 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:45,171 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:45,197 INFO L252 McrAutomatonBuilder]: Finished intersection with 108 states and 223 transitions. [2022-03-15 19:29:45,197 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:46,016 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 14 new interpolants: [19508#(< thread2Thread1of1ForFork0_~i~1 ~M~0), 19515#(or (<= ~N~0 ~M~0) (<= (+ 2 ~M~0) ~N~0)), 19510#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~N~0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)), 19517#(or (< 0 ~M~0) (<= ~N~0 ~M~0) (<= (+ 2 ~M~0) ~N~0)), 19519#(and (or (= thread2Thread1of1ForFork0_~i~1 0) (<= ~N~0 ~M~0)) (or (<= ~N~0 ~M~0) (<= 2 ~N~0))), 19512#(< 0 ~M~0), 19511#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~N~0) (< thread2Thread1of1ForFork0_~i~1 ~M~0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)), 19518#(and (or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) (+ ~N~0 ~M~0)) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)) (or (= thread2Thread1of1ForFork0_~i~1 0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2))), 19466#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~N~0) (< 0 ~M~0)), 19514#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~N~0) (< 0 ~M~0) (<= ~N~0 thread3Thread1of1ForFork1_~i~2)), 19516#(or (< thread2Thread1of1ForFork0_~i~1 ~M~0) (<= ~N~0 ~M~0) (<= (+ 2 ~M~0) ~N~0)), 19509#(or (< thread3Thread1of1ForFork1_~i~2 ~N~0) (< thread2Thread1of1ForFork0_~i~1 ~M~0)), 19462#(or (<= (+ 2 thread3Thread1of1ForFork1_~i~2) ~N~0) (< thread2Thread1of1ForFork0_~i~1 ~M~0)), 19513#(or (< 0 ~M~0) (< thread3Thread1of1ForFork1_~i~2 ~N~0))] [2022-03-15 19:29:46,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 19:29:46,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 19:29:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2022-03-15 19:29:46,017 INFO L87 Difference]: Start difference. First operand 310 states and 992 transitions. Second operand has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 19:29:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:47,715 INFO L93 Difference]: Finished difference Result 760 states and 2453 transitions. [2022-03-15 19:29:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 19:29:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 29 [2022-03-15 19:29:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:47,720 INFO L225 Difference]: With dead ends: 760 [2022-03-15 19:29:47,720 INFO L226 Difference]: Without dead ends: 760 [2022-03-15 19:29:47,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1235 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1118, Invalid=3574, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 19:29:47,721 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 393 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:47,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [393 Valid, 158 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-03-15 19:29:47,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-03-15 19:29:47,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 468. [2022-03-15 19:29:47,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.2698072805139184) internal successors, (1527), 467 states have internal predecessors, (1527), 0 states have call successors, (0), 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 19:29:47,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1527 transitions. [2022-03-15 19:29:47,735 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1527 transitions. Word has length 29 [2022-03-15 19:29:47,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:47,736 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1527 transitions. [2022-03-15 19:29:47,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.666666666666667) internal successors, (112), 23 states have internal predecessors, (112), 0 states have call successors, (0), 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 19:29:47,736 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1527 transitions. [2022-03-15 19:29:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-15 19:29:47,737 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:47,737 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:47,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 19:29:47,955 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,SelfDestructingSolverStorable10 [2022-03-15 19:29:47,955 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:47,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1445832541, now seen corresponding path program 2 times [2022-03-15 19:29:47,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:47,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784324126] [2022-03-15 19:29:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:47,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 19:29:48,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:48,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784324126] [2022-03-15 19:29:48,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784324126] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:48,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895584852] [2022-03-15 19:29:48,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 19:29:48,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:48,052 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 19:29:48,078 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 19:29:48,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 19:29:48,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:48,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 19:29:48,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 19:29:48,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:29:48,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 19:29:48,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895584852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 19:29:48,342 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 19:29:48,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-03-15 19:29:48,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [722424575] [2022-03-15 19:29:48,342 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 19:29:48,347 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 19:29:48,370 INFO L252 McrAutomatonBuilder]: Finished intersection with 90 states and 170 transitions. [2022-03-15 19:29:48,371 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 19:29:48,844 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 19:29:48,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 19:29:48,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 19:29:48,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 19:29:48,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-03-15 19:29:48,845 INFO L87 Difference]: Start difference. First operand 468 states and 1527 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:29:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 19:29:48,959 INFO L93 Difference]: Finished difference Result 620 states and 2045 transitions. [2022-03-15 19:29:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 19:29:48,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-15 19:29:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 19:29:48,962 INFO L225 Difference]: With dead ends: 620 [2022-03-15 19:29:48,962 INFO L226 Difference]: Without dead ends: 620 [2022-03-15 19:29:48,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 104 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-03-15 19:29:48,963 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 87 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 19:29:48,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 14 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 19:29:48,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2022-03-15 19:29:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 620. [2022-03-15 19:29:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 619 states have (on average 3.3037156704361874) internal successors, (2045), 619 states have internal predecessors, (2045), 0 states have call successors, (0), 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 19:29:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 2045 transitions. [2022-03-15 19:29:48,977 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 2045 transitions. Word has length 31 [2022-03-15 19:29:48,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 19:29:48,978 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 2045 transitions. [2022-03-15 19:29:48,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 19:29:48,978 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 2045 transitions. [2022-03-15 19:29:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 19:29:48,979 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 19:29:48,980 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 19:29:49,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-15 19:29:49,195 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,SelfDestructingSolverStorable11 [2022-03-15 19:29:49,196 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-03-15 19:29:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 19:29:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash 492936257, now seen corresponding path program 3 times [2022-03-15 19:29:49,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 19:29:49,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440155441] [2022-03-15 19:29:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 19:29:49,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 19:29:49,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 19:29:49,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 19:29:49,645 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 19:29:49,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440155441] [2022-03-15 19:29:49,645 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440155441] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 19:29:49,645 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708297528] [2022-03-15 19:29:49,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 19:29:49,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 19:29:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 19:29:49,646 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 19:29:49,647 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 19:29:49,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 19:29:49,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 19:29:49,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 68 conjunts are in the unsatisfiable core [2022-03-15 19:29:49,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 19:29:49,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:49,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:49,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:49,954 INFO L353 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-03-15 19:29:49,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-03-15 19:29:50,030 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-03-15 19:29:50,071 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 19:29:50,071 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 19:29:50,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,151 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,251 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-03-15 19:29:50,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2022-03-15 19:29:50,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:50,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-03-15 19:29:50,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2022-03-15 19:29:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-03-15 19:29:50,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 19:30:01,813 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-03-15 19:30:01,813 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 179 [2022-03-15 19:30:02,035 INFO L353 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2022-03-15 19:30:02,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 755761142 treesize of output 742129663 [2022-03-15 19:43:07,610 WARN L228 SmtUtils]: Spent 13.09m on a formula simplification that was a NOOP. DAG size: 5549 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2022-03-15 19:43:22,500 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 19:43:22,501 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 19:43:22,505 WARN L244 SmtUtils]: Removed 1 from assertion stack [2022-03-15 19:43:22,507 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-03-15 19:43:22,533 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 19:43:22,723 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,SelfDestructingSolverStorable12 [2022-03-15 19:43:22,724 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. [2022-03-15 19:43:22,725 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-03-15 19:43:22,725 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-03-15 19:43:22,726 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-03-15 19:43:22,728 INFO L732 BasicCegarLoop]: Path program histogram: [7, 3, 1, 1, 1] [2022-03-15 19:43:22,730 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 19:43:22,730 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 19:43:22,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 07:43:22 BasicIcfg [2022-03-15 19:43:22,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 19:43:22,734 INFO L158 Benchmark]: Toolchain (without parser) took 864745.31ms. Allocated memory was 180.4MB in the beginning and 720.4MB in the end (delta: 540.0MB). Free memory was 132.2MB in the beginning and 270.4MB in the end (delta: -138.2MB). Peak memory consumption was 517.5MB. Max. memory is 8.0GB. [2022-03-15 19:43:22,734 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 19:43:22,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.47ms. Allocated memory is still 180.4MB. Free memory was 132.0MB in the beginning and 158.0MB in the end (delta: -26.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. [2022-03-15 19:43:22,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.52ms. Allocated memory is still 180.4MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 19:43:22,735 INFO L158 Benchmark]: Boogie Preprocessor took 47.20ms. Allocated memory is still 180.4MB. Free memory was 155.9MB in the beginning and 154.4MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 19:43:22,735 INFO L158 Benchmark]: RCFGBuilder took 408.24ms. Allocated memory is still 180.4MB. Free memory was 154.4MB in the beginning and 137.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-15 19:43:22,736 INFO L158 Benchmark]: TraceAbstraction took 863912.78ms. Allocated memory was 180.4MB in the beginning and 720.4MB in the end (delta: 540.0MB). Free memory was 137.1MB in the beginning and 270.4MB in the end (delta: -133.3MB). Peak memory consumption was 522.4MB. Max. memory is 8.0GB. [2022-03-15 19:43:22,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 180.4MB. Free memory is still 149.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 322.47ms. Allocated memory is still 180.4MB. Free memory was 132.0MB in the beginning and 158.0MB in the end (delta: -26.1MB). Peak memory consumption was 11.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.52ms. Allocated memory is still 180.4MB. Free memory was 158.0MB in the beginning and 155.9MB in the end (delta: 2.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 47.20ms. Allocated memory is still 180.4MB. Free memory was 155.9MB in the beginning and 154.4MB in the end (delta: 1.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 408.24ms. Allocated memory is still 180.4MB. Free memory was 154.4MB in the beginning and 137.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 863912.78ms. Allocated memory was 180.4MB in the beginning and 720.4MB in the end (delta: 540.0MB). Free memory was 137.1MB in the beginning and 270.4MB in the end (delta: -133.3MB). Peak memory consumption was 522.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 205 PlacesBefore, 38 PlacesAfterwards, 212 TransitionsBefore, 33 TransitionsAfterwards, 1728 CoEnabledTransitionPairs, 7 FixpointIterations, 133 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 33 TrivialYvCompositions, 6 ConcurrentYvCompositions, 12 ChoiceCompositions, 214 TotalNumberOfCompositions, 2710 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1809, positive: 1712, positive conditional: 0, positive unconditional: 1712, negative: 97, negative conditional: 0, negative unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 895, positive: 865, positive conditional: 0, positive unconditional: 865, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1809, positive: 847, positive conditional: 0, positive unconditional: 847, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 895, unknown conditional: 0, unknown unconditional: 895] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 68, Positive conditional cache size: 0, Positive unconditional cache size: 68, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 34 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-6-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∨-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 232 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 863.7s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1549 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1549 mSDsluCounter, 663 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2807 mSDsCounter, 255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5382 IncrementalHoareTripleChecker+Invalid, 5637 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 255 mSolverCounterUnsat, 98 mSDtfsCounter, 5382 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1606 GetRequests, 1216 SyntacticMatches, 65 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3421 ImplicationChecksByTransitivity, 18.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=639occurred in iteration=8, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 3123 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 20.4s InterpolantComputationTime, 625 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 893 ConstructedInterpolants, 69 QuantifiedInterpolants, 9144 SizeOfPredicates, 77 NumberOfNonLiveVariables, 3006 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 34 InterpolantComputations, 3 PerfectInterpolantSequences, 106/168 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown