/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/pthread/fib_safe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 17:20:32,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 17:20:32,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 17:20:32,669 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 17:20:32,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 17:20:32,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 17:20:32,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 17:20:32,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 17:20:32,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 17:20:32,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 17:20:32,674 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 17:20:32,675 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 17:20:32,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 17:20:32,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 17:20:32,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 17:20:32,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 17:20:32,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 17:20:32,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 17:20:32,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 17:20:32,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 17:20:32,683 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 17:20:32,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 17:20:32,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 17:20:32,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 17:20:32,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 17:20:32,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 17:20:32,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 17:20:32,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 17:20:32,729 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 17:20:32,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 17:20:32,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 17:20:32,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 17:20:32,743 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 17:20:32,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 17:20:32,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 17:20:32,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 17:20:32,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 17:20:32,745 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:32,745 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 17:20:32,746 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 17:20:32,746 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 17:20:32,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 17:20:32,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 17:20:32,888 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 17:20:32,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 17:20:32,890 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 17:20:32,890 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-5.i [2022-03-15 17:20:32,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764b24dd2/5599a903b98e4adba2b4df11ce4b674f/FLAG22befbab9 [2022-03-15 17:20:33,354 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 17:20:33,354 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-5.i [2022-03-15 17:20:33,376 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764b24dd2/5599a903b98e4adba2b4df11ce4b674f/FLAG22befbab9 [2022-03-15 17:20:33,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/764b24dd2/5599a903b98e4adba2b4df11ce4b674f [2022-03-15 17:20:33,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 17:20:33,389 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 17:20:33,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:33,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 17:20:33,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 17:20:33,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@338942c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33, skipping insertion in model container [2022-03-15 17:20:33,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,398 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 17:20:33,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 17:20:33,790 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-5.i[30813,30826] [2022-03-15 17:20:33,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:33,804 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 17:20:33,855 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-5.i[30813,30826] [2022-03-15 17:20:33,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:33,928 INFO L208 MainTranslator]: Completed translation [2022-03-15 17:20:33,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33 WrapperNode [2022-03-15 17:20:33,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:33,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:33,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 17:20:33,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 17:20:33,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,009 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-15 17:20:34,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:34,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 17:20:34,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 17:20:34,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 17:20:34,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 17:20:34,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 17:20:34,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 17:20:34,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 17:20:34,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:34,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:34,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:34,118 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 17:20:34,125 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 17:20:34,149 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-03-15 17:20:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-03-15 17:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-03-15 17:20:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-03-15 17:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 17:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 17:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 17:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 17:20:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 17:20:34,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 17:20:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 17:20:34,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 17:20:34,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 17:20:34,153 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 17:20:34,284 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 17:20:34,287 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 17:20:34,430 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 17:20:34,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 17:20:34,435 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 17:20:34,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:34 BoogieIcfgContainer [2022-03-15 17:20:34,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 17:20:34,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 17:20:34,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 17:20:34,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 17:20:34,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 05:20:33" (1/3) ... [2022-03-15 17:20:34,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5cf13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:20:34, skipping insertion in model container [2022-03-15 17:20:34,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33" (2/3) ... [2022-03-15 17:20:34,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a5cf13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:20:34, skipping insertion in model container [2022-03-15 17:20:34,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:34" (3/3) ... [2022-03-15 17:20:34,443 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2022-03-15 17:20:34,447 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 17:20:34,447 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 17:20:34,447 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 17:20:34,447 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 17:20:34,470 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,470 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,470 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,470 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,470 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,470 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,471 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,471 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,471 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,471 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,472 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,473 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,474 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,475 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,476 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,478 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,478 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,478 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,480 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,480 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,480 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,480 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,480 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,481 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 17:20:34,509 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 17:20:34,514 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 17:20:34,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 17:20:34,522 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 17:20:34,527 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,529 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,530 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,560 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-03-15 17:20:34,560 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 17:20:34,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-03-15 17:20:34,565 INFO L116 LiptonReduction]: Number of co-enabled transitions 1870 [2022-03-15 17:20:36,932 INFO L131 LiptonReduction]: Checked pairs total: 1462 [2022-03-15 17:20:36,932 INFO L133 LiptonReduction]: Total number of compositions: 92 [2022-03-15 17:20:36,940 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2022-03-15 17:20:36,958 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:20:36,959 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 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 17:20:36,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 17:20:36,964 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:36,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 17:20:36,965 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:36,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:36,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2083717598, now seen corresponding path program 1 times [2022-03-15 17:20:36,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:36,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374438125] [2022-03-15 17:20:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:36,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,159 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 17:20:37,159 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,159 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374438125] [2022-03-15 17:20:37,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374438125] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:20:37,160 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:20:37,160 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:20:37,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [90008820] [2022-03-15 17:20:37,162 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,165 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,173 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2022-03-15 17:20:37,173 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,175 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 17:20:37,176 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 17:20:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:37,196 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 17:20:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,229 INFO L93 Difference]: Finished difference Result 44 states and 122 transitions. [2022-03-15 17:20:37,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 17:20:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-03-15 17:20:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,241 INFO L225 Difference]: With dead ends: 44 [2022-03-15 17:20:37,241 INFO L226 Difference]: Without dead ends: 44 [2022-03-15 17:20:37,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:37,245 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:37,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-15 17:20:37,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-15 17:20:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 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 17:20:37,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 122 transitions. [2022-03-15 17:20:37,268 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 122 transitions. Word has length 6 [2022-03-15 17:20:37,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,269 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 122 transitions. [2022-03-15 17:20:37,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 17:20:37,269 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 122 transitions. [2022-03-15 17:20:37,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 17:20:37,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 17:20:37,270 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash -170735922, now seen corresponding path program 1 times [2022-03-15 17:20:37,271 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,271 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140708058] [2022-03-15 17:20:37,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140708058] [2022-03-15 17:20:37,313 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140708058] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:37,313 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583166520] [2022-03-15 17:20:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:37,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:37,315 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 17:20:37,317 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 17:20:37,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 17:20:37,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,416 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583166520] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:37,416 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:37,416 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-03-15 17:20:37,416 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1035585109] [2022-03-15 17:20:37,417 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,417 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,418 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2022-03-15 17:20:37,418 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,418 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 17:20:37,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 17:20:37,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:37,419 INFO L87 Difference]: Start difference. First operand 44 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 17:20:37,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,444 INFO L93 Difference]: Finished difference Result 53 states and 149 transitions. [2022-03-15 17:20:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 17:20:37,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-03-15 17:20:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,445 INFO L225 Difference]: With dead ends: 53 [2022-03-15 17:20:37,445 INFO L226 Difference]: Without dead ends: 53 [2022-03-15 17:20:37,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:37,446 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:37,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:37,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-15 17:20:37,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-03-15 17:20:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 52 states have internal predecessors, (149), 0 states have call successors, (0), 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 17:20:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 149 transitions. [2022-03-15 17:20:37,451 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 149 transitions. Word has length 7 [2022-03-15 17:20:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,451 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 149 transitions. [2022-03-15 17:20:37,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 17:20:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 149 transitions. [2022-03-15 17:20:37,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 17:20:37,452 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,452 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,496 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 17:20:37,670 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 17:20:37,671 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -997846110, now seen corresponding path program 2 times [2022-03-15 17:20:37,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,680 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917888188] [2022-03-15 17:20:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,741 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917888188] [2022-03-15 17:20:37,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917888188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:37,741 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145134739] [2022-03-15 17:20:37,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:37,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:37,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:37,756 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 17:20:37,757 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 17:20:37,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:37,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:37,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 17:20:37,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:37,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145134739] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:37,877 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:37,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-15 17:20:37,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [868346568] [2022-03-15 17:20:37,877 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,878 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,879 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 17:20:37,879 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,879 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:20:37,879 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:20:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:37,880 INFO L87 Difference]: Start difference. First operand 53 states and 149 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 17:20:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,918 INFO L93 Difference]: Finished difference Result 62 states and 176 transitions. [2022-03-15 17:20:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 17:20:37,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-03-15 17:20:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,919 INFO L225 Difference]: With dead ends: 62 [2022-03-15 17:20:37,920 INFO L226 Difference]: Without dead ends: 62 [2022-03-15 17:20:37,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:37,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:37,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:37,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-15 17:20:37,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-03-15 17:20:37,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.8852459016393444) internal successors, (176), 61 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 176 transitions. [2022-03-15 17:20:37,926 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 176 transitions. Word has length 8 [2022-03-15 17:20:37,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,926 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 176 transitions. [2022-03-15 17:20:37,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 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 17:20:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 176 transitions. [2022-03-15 17:20:37,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 17:20:37,927 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,927 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,959 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 17:20:38,144 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 17:20:38,144 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:38,144 INFO L85 PathProgramCache]: Analyzing trace with hash -868458162, now seen corresponding path program 3 times [2022-03-15 17:20:38,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:38,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519721294] [2022-03-15 17:20:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:38,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:38,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,186 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:38,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519721294] [2022-03-15 17:20:38,186 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519721294] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:38,186 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167842720] [2022-03-15 17:20:38,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:38,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,188 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 17:20:38,189 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 17:20:38,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 17:20:38,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:38,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 17:20:38,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167842720] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:38,299 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:38,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 17:20:38,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [390745629] [2022-03-15 17:20:38,299 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:38,300 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:38,300 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2022-03-15 17:20:38,300 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:38,301 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:38,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 17:20:38,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 17:20:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:38,301 INFO L87 Difference]: Start difference. First operand 62 states and 176 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:20:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:38,345 INFO L93 Difference]: Finished difference Result 71 states and 203 transitions. [2022-03-15 17:20:38,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 17:20:38,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-03-15 17:20:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:38,346 INFO L225 Difference]: With dead ends: 71 [2022-03-15 17:20:38,346 INFO L226 Difference]: Without dead ends: 71 [2022-03-15 17:20:38,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:38,348 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:38,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:38,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-15 17:20:38,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-15 17:20:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.9) internal successors, (203), 70 states have internal predecessors, (203), 0 states have call successors, (0), 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 17:20:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 203 transitions. [2022-03-15 17:20:38,355 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 203 transitions. Word has length 9 [2022-03-15 17:20:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:38,355 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 203 transitions. [2022-03-15 17:20:38,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 17:20:38,355 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 203 transitions. [2022-03-15 17:20:38,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 17:20:38,356 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:38,356 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:38,374 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 17:20:38,579 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 17:20:38,579 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:38,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:38,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1152399070, now seen corresponding path program 4 times [2022-03-15 17:20:38,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:38,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610792559] [2022-03-15 17:20:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:38,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:38,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,733 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:38,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610792559] [2022-03-15 17:20:38,733 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610792559] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:38,733 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078029914] [2022-03-15 17:20:38,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:38,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,734 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 17:20:38,735 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 17:20:38,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:38,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:38,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 17:20:38,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:38,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078029914] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:38,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:38,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-03-15 17:20:38,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [899870714] [2022-03-15 17:20:38,910 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:38,910 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:38,911 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2022-03-15 17:20:38,911 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:38,911 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:38,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 17:20:38,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:38,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 17:20:38,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:38,913 INFO L87 Difference]: Start difference. First operand 71 states and 203 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 17:20:38,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:38,964 INFO L93 Difference]: Finished difference Result 80 states and 230 transitions. [2022-03-15 17:20:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 17:20:38,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-03-15 17:20:38,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:38,965 INFO L225 Difference]: With dead ends: 80 [2022-03-15 17:20:38,965 INFO L226 Difference]: Without dead ends: 80 [2022-03-15 17:20:38,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:38,966 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:38,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-15 17:20:38,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-15 17:20:38,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.911392405063291) internal successors, (230), 79 states have internal predecessors, (230), 0 states have call successors, (0), 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 17:20:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 230 transitions. [2022-03-15 17:20:38,970 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 230 transitions. Word has length 10 [2022-03-15 17:20:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:38,971 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 230 transitions. [2022-03-15 17:20:38,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 17:20:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 230 transitions. [2022-03-15 17:20:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 17:20:38,971 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:38,971 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:39,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:39,183 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 17:20:39,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1364632626, now seen corresponding path program 5 times [2022-03-15 17:20:39,186 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:39,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455694175] [2022-03-15 17:20:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:39,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:39,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,256 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:39,256 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455694175] [2022-03-15 17:20:39,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455694175] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:39,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942737644] [2022-03-15 17:20:39,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:39,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:39,259 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 17:20:39,261 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 17:20:39,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 17:20:39,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 17:20:39,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:39,421 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,421 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942737644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:39,421 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:39,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-15 17:20:39,421 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1162153571] [2022-03-15 17:20:39,421 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:39,422 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:39,423 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2022-03-15 17:20:39,423 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:39,423 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:39,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:20:39,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:20:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:39,424 INFO L87 Difference]: Start difference. First operand 80 states and 230 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 17:20:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:39,514 INFO L93 Difference]: Finished difference Result 89 states and 257 transitions. [2022-03-15 17:20:39,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:20:39,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-03-15 17:20:39,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:39,515 INFO L225 Difference]: With dead ends: 89 [2022-03-15 17:20:39,515 INFO L226 Difference]: Without dead ends: 89 [2022-03-15 17:20:39,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:39,516 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:39,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-15 17:20:39,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-03-15 17:20:39,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.9204545454545454) internal successors, (257), 88 states have internal predecessors, (257), 0 states have call successors, (0), 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 17:20:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 257 transitions. [2022-03-15 17:20:39,523 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 257 transitions. Word has length 11 [2022-03-15 17:20:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:39,523 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 257 transitions. [2022-03-15 17:20:39,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 17:20:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 257 transitions. [2022-03-15 17:20:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 17:20:39,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:39,524 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:39,558 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 17:20:39,749 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 17:20:39,750 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:39,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash 646061730, now seen corresponding path program 6 times [2022-03-15 17:20:39,754 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:39,754 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820698134] [2022-03-15 17:20:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:39,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820698134] [2022-03-15 17:20:39,853 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820698134] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:39,853 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369034855] [2022-03-15 17:20:39,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:39,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:39,868 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 17:20:39,878 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 17:20:39,933 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 17:20:39,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:39,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 17:20:39,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:40,136 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,136 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369034855] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:40,136 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:40,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-15 17:20:40,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1677903991] [2022-03-15 17:20:40,137 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:40,137 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:40,138 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2022-03-15 17:20:40,138 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:40,138 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:40,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:20:40,139 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:20:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,139 INFO L87 Difference]: Start difference. First operand 89 states and 257 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 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 17:20:40,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:40,216 INFO L93 Difference]: Finished difference Result 98 states and 284 transitions. [2022-03-15 17:20:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 17:20:40,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-03-15 17:20:40,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:40,217 INFO L225 Difference]: With dead ends: 98 [2022-03-15 17:20:40,217 INFO L226 Difference]: Without dead ends: 98 [2022-03-15 17:20:40,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,218 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:40,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-15 17:20:40,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-03-15 17:20:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.9278350515463916) internal successors, (284), 97 states have internal predecessors, (284), 0 states have call successors, (0), 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 17:20:40,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 284 transitions. [2022-03-15 17:20:40,223 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 284 transitions. Word has length 12 [2022-03-15 17:20:40,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:40,223 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 284 transitions. [2022-03-15 17:20:40,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 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 17:20:40,223 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 284 transitions. [2022-03-15 17:20:40,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 17:20:40,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:40,224 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:40,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-03-15 17:20:40,424 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 17:20:40,425 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:40,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:40,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1446922674, now seen corresponding path program 7 times [2022-03-15 17:20:40,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:40,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402564358] [2022-03-15 17:20:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:40,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:40,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402564358] [2022-03-15 17:20:40,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402564358] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:40,527 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088671632] [2022-03-15 17:20:40,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:20:40,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:40,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:40,528 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 17:20:40,529 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 17:20:40,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 17:20:40,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088671632] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:40,675 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:40,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-03-15 17:20:40,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1862632856] [2022-03-15 17:20:40,676 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:40,677 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:40,678 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2022-03-15 17:20:40,678 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:40,678 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:40,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 17:20:40,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:40,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 17:20:40,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,679 INFO L87 Difference]: Start difference. First operand 98 states and 284 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:40,756 INFO L93 Difference]: Finished difference Result 107 states and 311 transitions. [2022-03-15 17:20:40,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 17:20:40,757 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 17:20:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:40,757 INFO L225 Difference]: With dead ends: 107 [2022-03-15 17:20:40,757 INFO L226 Difference]: Without dead ends: 107 [2022-03-15 17:20:40,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,758 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:40,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:40,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-03-15 17:20:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-03-15 17:20:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.9339622641509435) internal successors, (311), 106 states have internal predecessors, (311), 0 states have call successors, (0), 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 17:20:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 311 transitions. [2022-03-15 17:20:40,763 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 311 transitions. Word has length 13 [2022-03-15 17:20:40,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:40,763 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 311 transitions. [2022-03-15 17:20:40,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,763 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 311 transitions. [2022-03-15 17:20:40,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 17:20:40,763 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:40,763 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:40,785 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 17:20:40,980 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 17:20:40,980 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:40,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1904929758, now seen corresponding path program 8 times [2022-03-15 17:20:40,982 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:40,982 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750712858] [2022-03-15 17:20:40,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:40,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:41,054 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,054 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:41,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750712858] [2022-03-15 17:20:41,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750712858] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:41,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453107477] [2022-03-15 17:20:41,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:41,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:41,072 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 17:20:41,080 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 17:20:41,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:41,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:41,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 17:20:41,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:41,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453107477] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:41,207 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:41,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2022-03-15 17:20:41,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [696440380] [2022-03-15 17:20:41,207 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:41,208 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:41,209 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2022-03-15 17:20:41,209 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:41,209 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:41,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 17:20:41,210 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:41,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 17:20:41,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,210 INFO L87 Difference]: Start difference. First operand 107 states and 311 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 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 17:20:41,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:41,266 INFO L93 Difference]: Finished difference Result 116 states and 338 transitions. [2022-03-15 17:20:41,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 17:20:41,266 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 17:20:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:41,267 INFO L225 Difference]: With dead ends: 116 [2022-03-15 17:20:41,267 INFO L226 Difference]: Without dead ends: 116 [2022-03-15 17:20:41,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,267 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:41,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-15 17:20:41,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-03-15 17:20:41,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.9391304347826086) internal successors, (338), 115 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 338 transitions. [2022-03-15 17:20:41,272 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 338 transitions. Word has length 14 [2022-03-15 17:20:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:41,272 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 338 transitions. [2022-03-15 17:20:41,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 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 17:20:41,272 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 338 transitions. [2022-03-15 17:20:41,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:20:41,273 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:41,273 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:41,305 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 17:20:41,473 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 17:20:41,474 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1076719822, now seen corresponding path program 9 times [2022-03-15 17:20:41,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:41,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165139061] [2022-03-15 17:20:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:41,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:41,552 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,552 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:41,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165139061] [2022-03-15 17:20:41,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165139061] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:41,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688131895] [2022-03-15 17:20:41,553 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:41,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:41,554 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 17:20:41,555 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 17:20:41,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 17:20:41,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:41,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 17:20:41,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688131895] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:41,700 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:41,700 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2022-03-15 17:20:41,700 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [268597496] [2022-03-15 17:20:41,700 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:41,701 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:41,702 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2022-03-15 17:20:41,702 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:41,702 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:41,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 17:20:41,702 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:41,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 17:20:41,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,703 INFO L87 Difference]: Start difference. First operand 116 states and 338 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 17:20:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:41,771 INFO L93 Difference]: Finished difference Result 125 states and 365 transitions. [2022-03-15 17:20:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 17:20:41,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 17:20:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:41,772 INFO L225 Difference]: With dead ends: 125 [2022-03-15 17:20:41,772 INFO L226 Difference]: Without dead ends: 125 [2022-03-15 17:20:41,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,772 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:41,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:41,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-03-15 17:20:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-03-15 17:20:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.943548387096774) internal successors, (365), 124 states have internal predecessors, (365), 0 states have call successors, (0), 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 17:20:41,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 365 transitions. [2022-03-15 17:20:41,777 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 365 transitions. Word has length 15 [2022-03-15 17:20:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:41,777 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 365 transitions. [2022-03-15 17:20:41,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 17:20:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 365 transitions. [2022-03-15 17:20:41,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 17:20:41,778 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:41,778 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:41,805 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 17:20:41,994 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 17:20:41,994 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -981423710, now seen corresponding path program 10 times [2022-03-15 17:20:41,995 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:41,995 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084988629] [2022-03-15 17:20:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:42,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,120 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:42,120 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084988629] [2022-03-15 17:20:42,120 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084988629] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:42,121 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077103305] [2022-03-15 17:20:42,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:42,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:42,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:42,122 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 17:20:42,128 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 17:20:42,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:42,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:42,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 17:20:42,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:42,275 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077103305] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:42,276 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:42,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-03-15 17:20:42,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [118797353] [2022-03-15 17:20:42,276 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:42,277 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:42,279 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2022-03-15 17:20:42,279 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:42,279 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:42,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 17:20:42,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 17:20:42,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,280 INFO L87 Difference]: Start difference. First operand 125 states and 365 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 17:20:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:42,354 INFO L93 Difference]: Finished difference Result 134 states and 392 transitions. [2022-03-15 17:20:42,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 17:20:42,354 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 17:20:42,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:42,355 INFO L225 Difference]: With dead ends: 134 [2022-03-15 17:20:42,355 INFO L226 Difference]: Without dead ends: 134 [2022-03-15 17:20:42,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,355 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:42,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-03-15 17:20:42,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-03-15 17:20:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.9473684210526314) internal successors, (392), 133 states have internal predecessors, (392), 0 states have call successors, (0), 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 17:20:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 392 transitions. [2022-03-15 17:20:42,375 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 392 transitions. Word has length 16 [2022-03-15 17:20:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:42,375 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 392 transitions. [2022-03-15 17:20:42,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 17:20:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 392 transitions. [2022-03-15 17:20:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:20:42,376 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:42,376 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:42,398 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 17:20:42,598 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 17:20:42,599 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:42,599 INFO L85 PathProgramCache]: Analyzing trace with hash -359363762, now seen corresponding path program 11 times [2022-03-15 17:20:42,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:42,600 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411451364] [2022-03-15 17:20:42,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:42,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411451364] [2022-03-15 17:20:42,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411451364] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:42,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984802572] [2022-03-15 17:20:42,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:42,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:42,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:42,732 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 17:20:42,733 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 17:20:42,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 17:20:42,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:42,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 17:20:42,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:42,868 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984802572] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:42,868 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:42,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2022-03-15 17:20:42,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1300728679] [2022-03-15 17:20:42,868 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:42,869 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:42,871 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2022-03-15 17:20:42,871 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:42,871 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:42,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 17:20:42,871 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 17:20:42,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,872 INFO L87 Difference]: Start difference. First operand 134 states and 392 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 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 17:20:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:42,952 INFO L93 Difference]: Finished difference Result 143 states and 419 transitions. [2022-03-15 17:20:42,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 17:20:42,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 17:20:42,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:42,954 INFO L225 Difference]: With dead ends: 143 [2022-03-15 17:20:42,954 INFO L226 Difference]: Without dead ends: 143 [2022-03-15 17:20:42,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,955 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 192 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:42,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:42,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-03-15 17:20:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-03-15 17:20:42,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.9507042253521125) internal successors, (419), 142 states have internal predecessors, (419), 0 states have call successors, (0), 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 17:20:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 419 transitions. [2022-03-15 17:20:42,959 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 419 transitions. Word has length 17 [2022-03-15 17:20:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:42,959 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 419 transitions. [2022-03-15 17:20:42,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 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 17:20:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 419 transitions. [2022-03-15 17:20:42,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 17:20:42,960 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:42,960 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:42,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:43,187 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 17:20:43,187 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:43,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:43,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1744625442, now seen corresponding path program 12 times [2022-03-15 17:20:43,189 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:43,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288333325] [2022-03-15 17:20:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:43,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:43,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,522 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:43,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288333325] [2022-03-15 17:20:43,522 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288333325] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:43,522 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100429439] [2022-03-15 17:20:43,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:43,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:43,524 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 17:20:43,525 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 17:20:43,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 17:20:43,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:43,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 17:20:43,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:10,306 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:10,306 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100429439] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:10,306 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:10,306 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-03-15 17:21:10,306 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [975631351] [2022-03-15 17:21:10,306 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:10,307 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:10,309 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2022-03-15 17:21:10,309 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:10,309 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:10,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 17:21:10,310 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:10,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 17:21:10,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=1342, Unknown=7, NotChecked=0, Total=1640 [2022-03-15 17:21:10,310 INFO L87 Difference]: Start difference. First operand 143 states and 419 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 17:21:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:10,903 INFO L93 Difference]: Finished difference Result 260 states and 766 transitions. [2022-03-15 17:21:10,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:21:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 17:21:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:10,905 INFO L225 Difference]: With dead ends: 260 [2022-03-15 17:21:10,905 INFO L226 Difference]: Without dead ends: 260 [2022-03-15 17:21:10,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=291, Invalid=1342, Unknown=7, NotChecked=0, Total=1640 [2022-03-15 17:21:10,906 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:10,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 17:21:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-03-15 17:21:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 248. [2022-03-15 17:21:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0526315789473686) internal successors, (754), 247 states have internal predecessors, (754), 0 states have call successors, (0), 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 17:21:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 754 transitions. [2022-03-15 17:21:10,910 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 754 transitions. Word has length 18 [2022-03-15 17:21:10,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:10,911 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 754 transitions. [2022-03-15 17:21:10,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 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 17:21:10,911 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 754 transitions. [2022-03-15 17:21:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 17:21:10,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:10,911 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:10,927 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 17:21:11,127 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 17:21:11,127 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:11,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1751185970, now seen corresponding path program 13 times [2022-03-15 17:21:11,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:11,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65619137] [2022-03-15 17:21:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:11,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:11,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:11,239 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 79 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:11,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:11,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65619137] [2022-03-15 17:21:11,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65619137] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:11,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456205224] [2022-03-15 17:21:11,240 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:21:11,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:11,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:11,241 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:11,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 17:21:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:11,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 17:21:11,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:11,341 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:11,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:21:11,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456205224] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:21:11,342 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 17:21:11,342 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 16 [2022-03-15 17:21:11,342 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1500368345] [2022-03-15 17:21:11,342 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:11,343 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:11,345 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2022-03-15 17:21:11,345 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:11,345 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:11,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 17:21:11,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 17:21:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2022-03-15 17:21:11,346 INFO L87 Difference]: Start difference. First operand 248 states and 754 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 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 17:21:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:11,482 INFO L93 Difference]: Finished difference Result 258 states and 743 transitions. [2022-03-15 17:21:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:21:11,482 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 17:21:11,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:11,483 INFO L225 Difference]: With dead ends: 258 [2022-03-15 17:21:11,483 INFO L226 Difference]: Without dead ends: 244 [2022-03-15 17:21:11,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2022-03-15 17:21:11,484 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:11,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:21:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-03-15 17:21:11,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-03-15 17:21:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.888888888888889) internal successors, (702), 243 states have internal predecessors, (702), 0 states have call successors, (0), 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 17:21:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 702 transitions. [2022-03-15 17:21:11,489 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 702 transitions. Word has length 19 [2022-03-15 17:21:11,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:11,489 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 702 transitions. [2022-03-15 17:21:11,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 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 17:21:11,489 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 702 transitions. [2022-03-15 17:21:11,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 17:21:11,490 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:11,490 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:11,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:11,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 17:21:11,706 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:11,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:11,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1715364142, now seen corresponding path program 1 times [2022-03-15 17:21:11,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:11,707 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601890128] [2022-03-15 17:21:11,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:11,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:11,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:11,931 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:11,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601890128] [2022-03-15 17:21:11,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601890128] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:11,931 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102388913] [2022-03-15 17:21:11,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:11,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:11,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:11,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:11,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 17:21:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:12,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-15 17:21:12,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:12,497 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:12,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:52,049 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102388913] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:52,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:52,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-03-15 17:21:52,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [267363270] [2022-03-15 17:21:52,050 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:52,051 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:52,058 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 72 transitions. [2022-03-15 17:21:52,059 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:52,980 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [6289#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 6286#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 6293#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 6283#(and (<= (+ 142 ~j~0 ~i~0) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 6284#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 6285#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 6291#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 6282#(and (<= (+ 142 ~j~0 ~i~0) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 6287#(and (<= (+ 142 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 6292#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 6290#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 6288#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))))] [2022-03-15 17:21:52,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 17:21:52,980 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:52,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 17:21:52,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=2625, Unknown=12, NotChecked=0, Total=3080 [2022-03-15 17:21:52,981 INFO L87 Difference]: Start difference. First operand 244 states and 702 transitions. Second operand has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 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 17:21:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:54,717 INFO L93 Difference]: Finished difference Result 328 states and 948 transitions. [2022-03-15 17:21:54,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 17:21:54,718 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 17:21:54,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:54,719 INFO L225 Difference]: With dead ends: 328 [2022-03-15 17:21:54,719 INFO L226 Difference]: Without dead ends: 314 [2022-03-15 17:21:54,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1033 ImplicationChecksByTransitivity, 35.3s TimeCoverageRelationStatistics Valid=554, Invalid=4126, Unknown=12, NotChecked=0, Total=4692 [2022-03-15 17:21:54,721 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:54,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 17:21:54,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-03-15 17:21:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 286. [2022-03-15 17:21:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.992982456140351) internal successors, (853), 285 states have internal predecessors, (853), 0 states have call successors, (0), 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 17:21:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 853 transitions. [2022-03-15 17:21:54,726 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 853 transitions. Word has length 20 [2022-03-15 17:21:54,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:54,727 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 853 transitions. [2022-03-15 17:21:54,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 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 17:21:54,727 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 853 transitions. [2022-03-15 17:21:54,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 17:21:54,728 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:54,728 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:54,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:54,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:54,947 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1547751364, now seen corresponding path program 1 times [2022-03-15 17:21:54,968 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:54,968 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578441996] [2022-03-15 17:21:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:55,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:55,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578441996] [2022-03-15 17:21:55,266 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578441996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:55,266 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857647230] [2022-03-15 17:21:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:55,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:55,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:55,267 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:55,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 17:21:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:55,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-15 17:21:55,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:55,800 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:55,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:22:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:22:21,273 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857647230] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:22:21,273 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:22:21,273 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-03-15 17:22:21,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [68045797] [2022-03-15 17:22:21,274 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:22:21,275 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:22:21,279 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 80 transitions. [2022-03-15 17:22:21,280 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:22:22,367 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [7378#(and (<= (+ 143 ~i~0) (+ ~cur~0 ~j~0)) (= (+ (- 1) ~j~0) 0) (<= 144 ~cur~0)), 7387#(and (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 7380#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 7379#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 ~j~0))), 7383#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1)), 7385#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 7384#(and (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13)))), 7390#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 7386#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 7382#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3))) (= ~j~0 1)), 7388#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 7381#(and (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0))), 7389#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (= ~j~0 1))] [2022-03-15 17:22:22,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 17:22:22,368 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:22:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 17:22:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=2823, Unknown=7, NotChecked=0, Total=3192 [2022-03-15 17:22:22,369 INFO L87 Difference]: Start difference. First operand 286 states and 853 transitions. Second operand has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:22:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:22:25,218 INFO L93 Difference]: Finished difference Result 1398 states and 4011 transitions. [2022-03-15 17:22:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 17:22:25,218 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 17:22:25,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:22:25,230 INFO L225 Difference]: With dead ends: 1398 [2022-03-15 17:22:25,231 INFO L226 Difference]: Without dead ends: 1372 [2022-03-15 17:22:25,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 16 SyntacticMatches, 11 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2083 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=1683, Invalid=6500, Unknown=7, NotChecked=0, Total=8190 [2022-03-15 17:22:25,240 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:22:25,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 17:22:25,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-15 17:22:25,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 346. [2022-03-15 17:22:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.889855072463768) internal successors, (997), 345 states have internal predecessors, (997), 0 states have call successors, (0), 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 17:22:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 997 transitions. [2022-03-15 17:22:25,256 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 997 transitions. Word has length 20 [2022-03-15 17:22:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:22:25,256 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 997 transitions. [2022-03-15 17:22:25,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:22:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 997 transitions. [2022-03-15 17:22:25,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:22:25,257 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:22:25,257 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:22:25,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 17:22:25,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 17:22:25,473 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:22:25,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:22:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1131122049, now seen corresponding path program 2 times [2022-03-15 17:22:25,475 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:22:25,475 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211282579] [2022-03-15 17:22:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:22:25,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:22:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:22:25,737 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:22:25,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:22:25,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211282579] [2022-03-15 17:22:25,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211282579] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:22:25,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124111303] [2022-03-15 17:22:25,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:22:25,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:22:25,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:22:25,739 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:22:25,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 17:22:25,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:22:25,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:22:25,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:22:25,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:22:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:22:26,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:22,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124111303] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:22,925 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:22,925 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:23:22,925 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [749173592] [2022-03-15 17:23:22,925 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:22,926 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:22,932 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 99 transitions. [2022-03-15 17:23:22,932 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:24,784 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 24 new interpolants: [9725#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 9731#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 9718#(and (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 9724#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 9733#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 9727#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 9734#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 9716#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ 141 ~j~0 ~i~0) ~prev~0)), 9737#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 9736#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 9735#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 9728#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 9720#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 9719#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 9721#(and (<= (+ 141 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 9738#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 9717#(and (<= (+ 141 ~j~0 ~i~0) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 9730#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 9722#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 9723#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 9739#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 9732#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 9726#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0)), 9729#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))))] [2022-03-15 17:23:24,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 17:23:24,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:24,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 17:23:24,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=541, Invalid=4412, Unknown=17, NotChecked=0, Total=4970 [2022-03-15 17:23:24,785 INFO L87 Difference]: Start difference. First operand 346 states and 997 transitions. Second operand has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 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 17:23:27,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:27,696 INFO L93 Difference]: Finished difference Result 472 states and 1366 transitions. [2022-03-15 17:23:27,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 17:23:27,697 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 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 21 [2022-03-15 17:23:27,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:27,699 INFO L225 Difference]: With dead ends: 472 [2022-03-15 17:23:27,699 INFO L226 Difference]: Without dead ends: 458 [2022-03-15 17:23:27,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1983 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=791, Invalid=8504, Unknown=17, NotChecked=0, Total=9312 [2022-03-15 17:23:27,702 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:27,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-15 17:23:27,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-15 17:23:27,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 388. [2022-03-15 17:23:27,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.96640826873385) internal successors, (1148), 387 states have internal predecessors, (1148), 0 states have call successors, (0), 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 17:23:27,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1148 transitions. [2022-03-15 17:23:27,711 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1148 transitions. Word has length 21 [2022-03-15 17:23:27,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:27,712 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1148 transitions. [2022-03-15 17:23:27,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 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 17:23:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1148 transitions. [2022-03-15 17:23:27,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:23:27,715 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:27,715 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:23:27,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 17:23:27,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 17:23:27,936 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:23:27,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:27,937 INFO L85 PathProgramCache]: Analyzing trace with hash 735652235, now seen corresponding path program 2 times [2022-03-15 17:23:27,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:27,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274570491] [2022-03-15 17:23:27,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:27,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:28,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:28,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274570491] [2022-03-15 17:23:28,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274570491] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:28,271 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596457510] [2022-03-15 17:23:28,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:23:28,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:28,272 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:28,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 17:23:28,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:23:28,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:28,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:23:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:28,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:46,829 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596457510] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:46,829 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:46,829 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:23:46,829 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1368417850] [2022-03-15 17:23:46,829 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:46,830 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:46,844 INFO L252 McrAutomatonBuilder]: Finished intersection with 67 states and 111 transitions. [2022-03-15 17:23:46,844 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:48,984 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [11222#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 11219#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3))) (= ~j~0 1)), 11210#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) (* 2 ~j~0))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2)))), 11220#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1)), 11223#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 11230#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (= ~j~0 1)), 11208#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 (* 2 ~j~0)))), 11217#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 11231#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 11211#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* 2 ~j~0) (* ~prev~0 3)))), 11218#(and (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0))), 11229#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* 2 ~j~0) (* ~cur~0 144)))), 11225#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 11216#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 ~j~0))), 11228#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 11213#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 8) (* ~cur~0 13))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13)))), 11226#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 11215#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 ~j~0)) (<= 144 ~cur~0)), 11212#(and (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) (* 2 ~j~0)))), 11214#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) (* 2 ~j~0))) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 11227#(and (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 11221#(and (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13)))), 11209#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 (* 2 ~j~0) (* ~cur~0 2)))), 11224#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 11207#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 (* 2 ~j~0))) (<= 144 ~cur~0))] [2022-03-15 17:23:48,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 17:23:48,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:48,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 17:23:48,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=4665, Unknown=2, NotChecked=0, Total=5112 [2022-03-15 17:23:48,986 INFO L87 Difference]: Start difference. First operand 388 states and 1148 transitions. Second operand has 42 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 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 17:23:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:54,361 INFO L93 Difference]: Finished difference Result 2126 states and 6050 transitions. [2022-03-15 17:23:54,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-15 17:23:54,361 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 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 17:23:54,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:54,369 INFO L225 Difference]: With dead ends: 2126 [2022-03-15 17:23:54,369 INFO L226 Difference]: Without dead ends: 2100 [2022-03-15 17:23:54,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5995 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=4394, Invalid=14510, Unknown=2, NotChecked=0, Total=18906 [2022-03-15 17:23:54,374 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 508 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:54,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 0 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-03-15 17:23:54,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-03-15 17:23:54,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 432. [2022-03-15 17:23:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.02784222737819) internal successors, (1305), 431 states have internal predecessors, (1305), 0 states have call successors, (0), 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 17:23:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1305 transitions. [2022-03-15 17:23:54,390 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1305 transitions. Word has length 21 [2022-03-15 17:23:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:54,390 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1305 transitions. [2022-03-15 17:23:54,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 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 17:23:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1305 transitions. [2022-03-15 17:23:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:23:54,391 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:54,391 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:23:54,421 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-03-15 17:23:54,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 17:23:54,608 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:23:54,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -199486350, now seen corresponding path program 3 times [2022-03-15 17:23:54,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:54,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339220645] [2022-03-15 17:23:54,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:54,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:54,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:54,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339220645] [2022-03-15 17:23:54,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339220645] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:54,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130249996] [2022-03-15 17:23:54,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:23:54,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:54,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:54,911 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:54,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 17:23:54,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 17:23:54,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:54,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:23:54,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:55,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:25:03,849 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:25:03,849 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130249996] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:25:03,849 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:25:03,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:25:03,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [909082093] [2022-03-15 17:25:03,850 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:25:03,851 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:25:03,859 INFO L252 McrAutomatonBuilder]: Finished intersection with 75 states and 126 transitions. [2022-03-15 17:25:03,859 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:25:06,986 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 36 new interpolants: [14535#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 14554#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 14555#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 14560#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 14548#(and (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 14563#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 14545#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 14539#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 14546#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 14533#(and (<= (+ 140 ~j~0 ~i~0) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 14531#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ 140 ~j~0 (* 2 ~i~0)) ~prev~0)), 14550#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 14540#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 14538#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 14565#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 14543#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 14557#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 14534#(and (<= (+ 140 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 14532#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 14558#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 14537#(and (<= (+ 140 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 14544#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 14551#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 14553#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 14542#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 14559#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 14549#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 14547#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 14561#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 14564#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 14556#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 14562#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 14530#(and (<= (+ 140 ~j~0 ~i~0) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 14536#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 14541#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 14552#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))))] [2022-03-15 17:25:06,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-15 17:25:06,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:25:06,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-15 17:25:06,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=639, Invalid=6650, Unknown=21, NotChecked=0, Total=7310 [2022-03-15 17:25:06,987 INFO L87 Difference]: Start difference. First operand 432 states and 1305 transitions. Second operand has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 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 17:25:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:25:12,461 INFO L93 Difference]: Finished difference Result 586 states and 1728 transitions. [2022-03-15 17:25:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 17:25:12,462 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:25:12,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:25:12,464 INFO L225 Difference]: With dead ends: 586 [2022-03-15 17:25:12,464 INFO L226 Difference]: Without dead ends: 572 [2022-03-15 17:25:12,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3137 ImplicationChecksByTransitivity, 66.3s TimeCoverageRelationStatistics Valid=1055, Invalid=14424, Unknown=21, NotChecked=0, Total=15500 [2022-03-15 17:25:12,465 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 4894 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:25:12,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 4897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4894 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 17:25:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-15 17:25:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 474. [2022-03-15 17:25:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 3.0782241014799157) internal successors, (1456), 473 states have internal predecessors, (1456), 0 states have call successors, (0), 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 17:25:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1456 transitions. [2022-03-15 17:25:12,473 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1456 transitions. Word has length 22 [2022-03-15 17:25:12,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:25:12,473 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 1456 transitions. [2022-03-15 17:25:12,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 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 17:25:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1456 transitions. [2022-03-15 17:25:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:25:12,474 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:25:12,474 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:25:12,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 17:25:12,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:25:12,687 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:25:12,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:25:12,687 INFO L85 PathProgramCache]: Analyzing trace with hash 802448244, now seen corresponding path program 1 times [2022-03-15 17:25:12,689 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:25:12,689 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72381889] [2022-03-15 17:25:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:25:12,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:25:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:25:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:25:12,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:25:12,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72381889] [2022-03-15 17:25:12,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72381889] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:25:12,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333293815] [2022-03-15 17:25:12,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:25:12,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:25:12,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:25:12,990 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:25:12,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 17:25:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:25:13,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:25:13,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:25:13,739 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:25:13,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:26:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:10,813 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333293815] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:26:10,813 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:26:10,813 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:26:10,813 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [375057344] [2022-03-15 17:26:10,813 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:26:10,814 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:26:10,828 INFO L252 McrAutomatonBuilder]: Finished intersection with 105 states and 212 transitions. [2022-03-15 17:26:10,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:26:14,065 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 26 new interpolants: [16362#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 142 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 16360#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 16371#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 16375#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 16376#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 16364#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 16354#(and (<= (+ 142 ~j~0 ~i~0) ~prev~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0)), 16359#(and (<= (+ 141 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 142 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 16368#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 16369#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 16361#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 16365#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 16370#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 16351#(and (<= (+ 142 ~j~0) ~cur~0) (<= (+ 141 ~i~0) ~cur~0)), 16355#(and (<= (+ 142 ~j~0 ~i~0) ~cur~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0)), 16353#(and (<= (+ 142 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 16366#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 16357#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 16358#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 16373#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 16352#(and (<= (+ 142 ~j~0) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~i~0) (+ ~prev~0 ~cur~0))), 16363#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 16356#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 ~cur~0))), 16367#(and (<= (+ 142 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 16372#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 16374#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))))] [2022-03-15 17:26:14,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 17:26:14,065 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:26:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 17:26:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=580, Invalid=4661, Unknown=15, NotChecked=0, Total=5256 [2022-03-15 17:26:14,066 INFO L87 Difference]: Start difference. First operand 474 states and 1456 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:26:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:26:32,887 INFO L93 Difference]: Finished difference Result 1932 states and 5613 transitions. [2022-03-15 17:26:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-03-15 17:26:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:26:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:26:32,894 INFO L225 Difference]: With dead ends: 1932 [2022-03-15 17:26:32,895 INFO L226 Difference]: Without dead ends: 1876 [2022-03-15 17:26:32,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15473 ImplicationChecksByTransitivity, 52.3s TimeCoverageRelationStatistics Valid=3031, Invalid=47354, Unknown=15, NotChecked=0, Total=50400 [2022-03-15 17:26:32,899 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 656 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 9761 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 9761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-03-15 17:26:32,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 0 Invalid, 9963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 9761 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-03-15 17:26:32,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-03-15 17:26:32,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 488. [2022-03-15 17:26:32,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 3.0451745379876796) internal successors, (1483), 487 states have internal predecessors, (1483), 0 states have call successors, (0), 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 17:26:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1483 transitions. [2022-03-15 17:26:32,917 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1483 transitions. Word has length 22 [2022-03-15 17:26:32,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:26:32,917 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 1483 transitions. [2022-03-15 17:26:32,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:26:32,917 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1483 transitions. [2022-03-15 17:26:32,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:26:32,919 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:26:32,919 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:26:32,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 17:26:33,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:26:33,133 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:26:33,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:26:33,134 INFO L85 PathProgramCache]: Analyzing trace with hash 290156336, now seen corresponding path program 2 times [2022-03-15 17:26:33,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:26:33,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255997502] [2022-03-15 17:26:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:26:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:26:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:26:33,438 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:33,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:26:33,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255997502] [2022-03-15 17:26:33,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255997502] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:26:33,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467566199] [2022-03-15 17:26:33,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:26:33,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:26:33,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:26:33,468 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:26:33,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 17:26:33,538 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:26:33,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:26:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:26:33,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:26:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:34,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:27:02,380 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:02,380 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467566199] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:27:02,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:27:02,380 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:27:02,380 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1228908151] [2022-03-15 17:27:02,380 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:27:02,382 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:27:02,395 INFO L252 McrAutomatonBuilder]: Finished intersection with 107 states and 216 transitions. [2022-03-15 17:27:02,395 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:27:05,152 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [19786#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 19776#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 19765#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 19781#(and (= ~j~0 1) (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 19766#(and (<= (+ 142 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 19770#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0))), 19768#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 19778#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 19777#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1)), 19780#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 19763#(and (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~j~0) (+ ~prev~0 ~cur~0))), 19782#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 19764#(and (<= (+ 141 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 142 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 19769#(and (= ~j~0 1) (<= (+ 142 ~i~0) ~cur~0)), 19771#(and (= ~j~0 1) (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 19779#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 19762#(and (<= (+ 142 ~i~0) ~cur~0) (<= (+ 141 ~j~0) ~cur~0)), 19774#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 19783#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 19785#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 19772#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 19775#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 19773#(and (<= (+ 141 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1)), 19767#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 19784#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))))] [2022-03-15 17:27:05,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 17:27:05,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:27:05,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 17:27:05,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=4635, Unknown=5, NotChecked=0, Total=5112 [2022-03-15 17:27:05,153 INFO L87 Difference]: Start difference. First operand 488 states and 1483 transitions. Second operand has 42 states, 41 states have (on average 2.8292682926829267) internal successors, (116), 41 states have internal predecessors, (116), 0 states have call successors, (0), 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 17:27:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:27:26,606 INFO L93 Difference]: Finished difference Result 3864 states and 11067 transitions. [2022-03-15 17:27:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-15 17:27:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.8292682926829267) internal successors, (116), 41 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:27:26,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:27:26,623 INFO L225 Difference]: With dead ends: 3864 [2022-03-15 17:27:26,623 INFO L226 Difference]: Without dead ends: 3772 [2022-03-15 17:27:26,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 36 SyntacticMatches, 35 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13068 ImplicationChecksByTransitivity, 35.5s TimeCoverageRelationStatistics Valid=5986, Invalid=37481, Unknown=5, NotChecked=0, Total=43472 [2022-03-15 17:27:26,632 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 404 mSDsluCounter, 7228 mSDsCounter, 0 mSdLazyCounter, 13038 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 13038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-03-15 17:27:26,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 0 Invalid, 13238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 13038 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-03-15 17:27:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-03-15 17:27:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 504. [2022-03-15 17:27:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.00596421471173) internal successors, (1512), 503 states have internal predecessors, (1512), 0 states have call successors, (0), 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 17:27:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1512 transitions. [2022-03-15 17:27:26,678 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1512 transitions. Word has length 22 [2022-03-15 17:27:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:27:26,679 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1512 transitions. [2022-03-15 17:27:26,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.8292682926829267) internal successors, (116), 41 states have internal predecessors, (116), 0 states have call successors, (0), 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 17:27:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1512 transitions. [2022-03-15 17:27:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:27:26,680 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:27:26,680 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:27:26,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 17:27:26,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-15 17:27:26,905 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:27:26,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:27:26,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1330383012, now seen corresponding path program 3 times [2022-03-15 17:27:26,907 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:27:26,907 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482847722] [2022-03-15 17:27:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:27:26,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:27:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:27:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:27,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:27:27,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482847722] [2022-03-15 17:27:27,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482847722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:27:27,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228475561] [2022-03-15 17:27:27,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:27:27,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:27:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:27:27,377 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:27:27,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 17:27:27,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 17:27:27,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:27:27,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:27:27,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:27:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:28,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:27:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:59,371 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228475561] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:27:59,371 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:27:59,371 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:27:59,371 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [108766726] [2022-03-15 17:27:59,372 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:27:59,373 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:27:59,381 INFO L252 McrAutomatonBuilder]: Finished intersection with 83 states and 142 transitions. [2022-03-15 17:27:59,381 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:28:03,320 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 37 new interpolants: [25122#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 (* 2 ~j~0)))), 25119#(and (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 25128#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) (* 2 ~j~0))) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 25114#(and (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) (* 3 ~j~0)))), 25140#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 25117#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~cur~0 34) (* ~prev~0 21)))), 25113#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* 3 ~j~0) (* ~prev~0 3)))), 25145#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 25136#(and (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0))), 25138#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1)), 25116#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) (* 3 ~j~0))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 25133#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 ~j~0)) (<= 144 ~cur~0)), 25137#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3))) (= ~j~0 1)), 25144#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (= ~j~0 1)), 25127#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 8) (* ~cur~0 13))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13)))), 25130#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 25131#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 25139#(and (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13)))), 25124#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) (* 2 ~j~0))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2)))), 25141#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 25126#(and (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) (* 2 ~j~0)))), 25123#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 (* 2 ~j~0) (* ~cur~0 2)))), 25129#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 25121#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 (* 2 ~j~0))) (<= 144 ~cur~0)), 25120#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* 3 ~j~0) (* ~cur~0 144)))), 25142#(and (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 25135#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 25132#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* 2 ~j~0) (* ~cur~0 144)))), 25110#(and (<= 144 (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 (* 3 ~j~0))) (= ~j~0 1)), 25112#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) (* 3 ~j~0))) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2)))), 25125#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* 2 ~j~0) (* ~prev~0 3)))), 25118#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 25115#(and (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~prev~0 8) (* ~cur~0 13))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13)))), 25111#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 (* 3 ~j~0) (* ~cur~0 2)))), 25109#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 (* 3 ~j~0))) (<= 144 ~cur~0)), 25143#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 25134#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 ~j~0)))] [2022-03-15 17:28:03,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 17:28:03,323 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:28:03,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 17:28:03,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=6929, Unknown=10, NotChecked=0, Total=7482 [2022-03-15 17:28:03,324 INFO L87 Difference]: Start difference. First operand 504 states and 1512 transitions. Second operand has 55 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 17:28:16,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:28:16,368 INFO L93 Difference]: Finished difference Result 2942 states and 8263 transitions. [2022-03-15 17:28:16,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-03-15 17:28:16,368 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:28:16,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:28:16,379 INFO L225 Difference]: With dead ends: 2942 [2022-03-15 17:28:16,379 INFO L226 Difference]: Without dead ends: 2916 [2022-03-15 17:28:16,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14305 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=9774, Invalid=28046, Unknown=10, NotChecked=0, Total=37830 [2022-03-15 17:28:16,382 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 731 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 3601 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:28:16,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 0 Invalid, 3884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 3601 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-15 17:28:16,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-03-15 17:28:16,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 548. [2022-03-15 17:28:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.0511882998171846) internal successors, (1669), 547 states have internal predecessors, (1669), 0 states have call successors, (0), 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 17:28:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1669 transitions. [2022-03-15 17:28:16,422 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1669 transitions. Word has length 22 [2022-03-15 17:28:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:28:16,423 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1669 transitions. [2022-03-15 17:28:16,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 17:28:16,426 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1669 transitions. [2022-03-15 17:28:16,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:28:16,432 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:28:16,432 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:28:16,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 17:28:16,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 17:28:16,647 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:28:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:28:16,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1383550753, now seen corresponding path program 4 times [2022-03-15 17:28:16,649 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:28:16,649 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738727571] [2022-03-15 17:28:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:28:16,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:28:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:28:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:28:17,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:28:17,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738727571] [2022-03-15 17:28:17,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738727571] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:28:17,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531564207] [2022-03-15 17:28:17,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:28:17,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:28:17,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:28:17,135 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:28:17,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 17:28:17,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:28:17,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:28:17,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 17:28:17,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:28:18,014 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:28:18,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:29:47,087 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:29:47,087 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531564207] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:29:47,087 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:29:47,087 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-03-15 17:29:47,087 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [664598150] [2022-03-15 17:29:47,088 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:29:47,089 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:29:47,099 INFO L252 McrAutomatonBuilder]: Finished intersection with 89 states and 153 transitions. [2022-03-15 17:29:47,099 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:29:54,030 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 48 new interpolants: [29590#(and (<= (+ ~j~0 139 (* 3 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29587#(and (<= (+ ~j~0 139 (* 2 ~i~0)) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 29624#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ (* ~i~0 4) ~j~0 139) (+ ~prev~0 (* ~cur~0 2)))), 29600#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29598#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29592#(and (<= (+ (* ~i~0 4) ~j~0 139) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29593#(and (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 29596#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 29603#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29612#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29616#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29606#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29605#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29609#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 29595#(and (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 139 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 29597#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 29625#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29607#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29631#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29599#(and (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29611#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29618#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29604#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 29591#(and (<= (+ (* ~i~0 4) ~j~0 139) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 29628#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29614#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29627#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29629#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 29623#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29589#(and (<= (+ ~j~0 139 (* 3 ~i~0)) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 29632#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29622#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29610#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29615#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 29613#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29621#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29594#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 29626#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29619#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29608#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29630#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29585#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ ~j~0 ~i~0 139) ~prev~0)), 29601#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29588#(and (<= (+ ~j~0 139 (* 2 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29586#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29620#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 29617#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29602#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))))] [2022-03-15 17:29:54,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-15 17:29:54,030 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:29:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-15 17:29:54,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=9330, Unknown=27, NotChecked=0, Total=10100 [2022-03-15 17:29:54,031 INFO L87 Difference]: Start difference. First operand 548 states and 1669 transitions. Second operand has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 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 17:30:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:30:03,465 INFO L93 Difference]: Finished difference Result 730 states and 2146 transitions. [2022-03-15 17:30:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-15 17:30:03,465 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 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 17:30:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:30:03,468 INFO L225 Difference]: With dead ends: 730 [2022-03-15 17:30:03,468 INFO L226 Difference]: Without dead ends: 716 [2022-03-15 17:30:03,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4620 ImplicationChecksByTransitivity, 80.3s TimeCoverageRelationStatistics Valid=1351, Invalid=21878, Unknown=27, NotChecked=0, Total=23256 [2022-03-15 17:30:03,469 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 646 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 6129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:30:03,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 0 Invalid, 6133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6129 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-03-15 17:30:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-03-15 17:30:03,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 590. [2022-03-15 17:30:03,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.089983022071307) internal successors, (1820), 589 states have internal predecessors, (1820), 0 states have call successors, (0), 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 17:30:03,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1820 transitions. [2022-03-15 17:30:03,494 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1820 transitions. Word has length 23 [2022-03-15 17:30:03,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:30:03,494 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1820 transitions. [2022-03-15 17:30:03,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 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 17:30:03,494 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1820 transitions. [2022-03-15 17:30:03,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:30:03,504 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:30:03,504 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:30:03,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 17:30:03,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:30:03,715 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:30:03,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:30:03,716 INFO L85 PathProgramCache]: Analyzing trace with hash -381616159, now seen corresponding path program 3 times [2022-03-15 17:30:03,721 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:30:03,721 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179128327] [2022-03-15 17:30:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:30:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:30:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:30:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:04,317 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:30:04,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179128327] [2022-03-15 17:30:04,318 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179128327] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:30:04,318 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985169007] [2022-03-15 17:30:04,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:30:04,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:30:04,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:30:04,319 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:30:04,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 17:30:04,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 17:30:04,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:30:04,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:30:04,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:30:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:05,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:30:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:52,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985169007] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:30:52,521 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:30:52,522 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:30:52,522 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [123970526] [2022-03-15 17:30:52,522 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:30:52,523 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:30:52,538 INFO L252 McrAutomatonBuilder]: Finished intersection with 133 states and 280 transitions. [2022-03-15 17:30:52,538 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:30:57,686 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 39 new interpolants: [31853#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 31847#(and (<= (+ 141 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 31831#(and (<= (+ 141 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 31865#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 31829#(and (<= (+ 140 ~i~0) ~cur~0) (<= (+ 141 ~j~0) ~cur~0)), 31860#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 31863#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 31846#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 31867#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31858#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 31856#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~cur~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0)), 31832#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 140 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 31837#(and (<= (+ 140 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 31843#(and (<= (+ 141 ~j~0 ~i~0) ~cur~0) (<= (+ 140 ~j~0 (* 2 ~i~0)) ~cur~0)), 31845#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 31840#(and (<= (+ 140 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31850#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 31836#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 140 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 31848#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 31855#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~prev~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0)), 31835#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 31859#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 31857#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 31862#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 31866#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 31842#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) ~prev~0) (<= (+ 141 ~j~0 ~i~0) ~prev~0)), 31844#(and (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0))), 31854#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31841#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31833#(and (<= (+ 141 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 140 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 31838#(and (<= (+ 140 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 31834#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 31849#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 31864#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 31830#(and (<= (+ 140 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~j~0) (+ ~prev~0 ~cur~0))), 31861#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 31851#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 31852#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 31839#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 140 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))))] [2022-03-15 17:30:57,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-15 17:30:57,686 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:30:57,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-15 17:30:57,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=691, Invalid=7130, Unknown=11, NotChecked=0, Total=7832 [2022-03-15 17:30:57,688 INFO L87 Difference]: Start difference. First operand 590 states and 1820 transitions. Second operand has 57 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 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 17:32:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:32:04,921 INFO L93 Difference]: Finished difference Result 4695 states and 13639 transitions. [2022-03-15 17:32:04,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 421 states. [2022-03-15 17:32:04,921 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 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 17:32:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:32:04,947 INFO L225 Difference]: With dead ends: 4695 [2022-03-15 17:32:04,948 INFO L226 Difference]: Without dead ends: 4612 [2022-03-15 17:32:04,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83773 ImplicationChecksByTransitivity, 91.8s TimeCoverageRelationStatistics Valid=9796, Invalid=215343, Unknown=11, NotChecked=0, Total=225150 [2022-03-15 17:32:04,958 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1186 mSDsluCounter, 9370 mSDsCounter, 0 mSdLazyCounter, 20458 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 20458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-03-15 17:32:04,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 0 Invalid, 20859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 20458 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-03-15 17:32:04,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-03-15 17:32:05,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 590. [2022-03-15 17:32:05,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.089983022071307) internal successors, (1820), 589 states have internal predecessors, (1820), 0 states have call successors, (0), 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 17:32:05,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1820 transitions. [2022-03-15 17:32:05,036 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1820 transitions. Word has length 23 [2022-03-15 17:32:05,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:32:05,036 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1820 transitions. [2022-03-15 17:32:05,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 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 17:32:05,036 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1820 transitions. [2022-03-15 17:32:05,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:32:05,037 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:32:05,037 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:32:05,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 17:32:05,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:32:05,254 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:32:05,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:32:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash -893908067, now seen corresponding path program 4 times [2022-03-15 17:32:05,256 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:32:05,256 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366233781] [2022-03-15 17:32:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:32:05,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:32:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:32:05,707 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:32:05,707 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:32:05,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366233781] [2022-03-15 17:32:05,707 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366233781] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:32:05,707 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077755034] [2022-03-15 17:32:05,707 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:32:05,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:32:05,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:32:05,708 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:32:05,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 17:32:05,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:32:05,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:32:05,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:32:05,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:32:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:32:06,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:33:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:13,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077755034] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:33:13,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:33:13,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:33:13,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [426740430] [2022-03-15 17:33:13,621 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:33:13,622 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:33:13,637 INFO L252 McrAutomatonBuilder]: Finished intersection with 119 states and 239 transitions. [2022-03-15 17:33:13,637 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:33:19,576 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 38 new interpolants: [38729#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38713#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 38719#(and (<= (+ ~j~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 38703#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 139) (+ (* ~cur~0 3) (* ~prev~0 2)))), 38721#(and (<= (+ ~j~0 139) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 38730#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 38710#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~cur~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0)), 38698#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 141 ~i~0) ~cur~0)), 38723#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 38701#(and (<= (+ ~j~0 139) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 38724#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 38697#(and (<= (+ ~j~0 139) ~cur~0) (<= (+ 141 ~i~0) ~cur~0)), 38718#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 38717#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 38731#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 38705#(and (<= (+ 141 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 38699#(and (<= (+ ~j~0 139) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~i~0) (+ ~prev~0 ~cur~0))), 38714#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 38727#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38712#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 38720#(and (<= (+ ~j~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 38725#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 38704#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2)))), 38732#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 38711#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 38726#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 38702#(and (<= (+ 141 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 38728#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38734#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38722#(and (<= (+ ~j~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 38709#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~prev~0)), 38708#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 38700#(and (<= (+ 141 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 38706#(and (<= (+ 141 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 38716#(and (<= (+ ~j~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 38733#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 38715#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 38707#(and (<= (+ ~j~0 139) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 141 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))))] [2022-03-15 17:33:19,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 17:33:19,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:33:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 17:33:19,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=690, Invalid=6949, Unknown=17, NotChecked=0, Total=7656 [2022-03-15 17:33:19,577 INFO L87 Difference]: Start difference. First operand 590 states and 1820 transitions. Second operand has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 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 17:34:17,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:34:17,660 INFO L93 Difference]: Finished difference Result 4124 states and 12047 transitions. [2022-03-15 17:34:17,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2022-03-15 17:34:17,660 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 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 17:34:17,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:34:17,676 INFO L225 Difference]: With dead ends: 4124 [2022-03-15 17:34:17,676 INFO L226 Difference]: Without dead ends: 4058 [2022-03-15 17:34:17,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56604 ImplicationChecksByTransitivity, 94.7s TimeCoverageRelationStatistics Valid=7595, Invalid=151988, Unknown=17, NotChecked=0, Total=159600 [2022-03-15 17:34:17,683 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1603 mSDsluCounter, 10045 mSDsCounter, 0 mSdLazyCounter, 21858 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 21858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2022-03-15 17:34:17,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 0 Invalid, 22253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [395 Valid, 21858 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2022-03-15 17:34:17,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2022-03-15 17:34:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 638. [2022-03-15 17:34:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 3.1899529042386185) internal successors, (2032), 637 states have internal predecessors, (2032), 0 states have call successors, (0), 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 17:34:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2032 transitions. [2022-03-15 17:34:17,709 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2032 transitions. Word has length 23 [2022-03-15 17:34:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:34:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2032 transitions. [2022-03-15 17:34:17,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 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 17:34:17,709 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2032 transitions. [2022-03-15 17:34:17,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:34:17,710 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:34:17,711 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:34:17,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-03-15 17:34:17,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-15 17:34:17,923 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:34:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:34:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash -893908005, now seen corresponding path program 5 times [2022-03-15 17:34:17,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:34:17,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173741080] [2022-03-15 17:34:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:34:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:34:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:34:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:34:18,374 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:34:18,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173741080] [2022-03-15 17:34:18,374 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173741080] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:34:18,374 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422620257] [2022-03-15 17:34:18,374 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:34:18,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:34:18,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:34:18,375 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:34:18,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 17:34:18,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 17:34:18,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:34:18,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:34:18,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:34:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:34:19,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:34:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:34:58,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422620257] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:34:58,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:34:58,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:34:58,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [345723784] [2022-03-15 17:34:58,175 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:34:58,177 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:34:58,190 INFO L252 McrAutomatonBuilder]: Finished intersection with 119 states and 239 transitions. [2022-03-15 17:34:58,190 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:35:03,713 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 38 new interpolants: [44959#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 44957#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 44965#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 44954#(and (<= (+ 142 ~j~0 ~i~0) ~cur~0) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~cur~0)), 44950#(and (<= (+ 142 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 44942#(and (<= (+ 142 ~j~0) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 139) (+ ~prev~0 ~cur~0))), 44970#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 44971#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 44964#(and (<= (+ ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 44976#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44963#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13)))), 44952#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 44955#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 44941#(and (<= (+ ~i~0 139) ~cur~0) (<= (+ 142 ~j~0) ~cur~0)), 44945#(and (<= (+ 142 ~j~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 44953#(and (<= (+ 142 ~j~0 ~i~0) ~prev~0) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~prev~0)), 44960#(and (<= (+ ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 44956#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 44975#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 44978#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44968#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 142 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 44951#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 44977#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 44967#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44972#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44947#(and (<= (+ ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 44943#(and (<= (+ 142 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 44946#(and (<= (+ 142 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 44969#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 44962#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 44973#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 44966#(and (<= (+ ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 44949#(and (<= (+ ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 142 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 44958#(and (<= (+ 142 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 44974#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 44948#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 44961#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 44944#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 142 ~j~0) ~cur~0))] [2022-03-15 17:35:03,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 17:35:03,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:35:03,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 17:35:03,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=6959, Unknown=9, NotChecked=0, Total=7656 [2022-03-15 17:35:03,714 INFO L87 Difference]: Start difference. First operand 638 states and 2032 transitions. Second operand has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 17:35:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 17:35:10,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3375 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=1341, Invalid=13412, Unknown=9, NotChecked=0, Total=14762 [2022-03-15 17:35:10,288 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 289 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:35:10,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 0 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 17:35:10,289 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 17:35:10,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 17:35:10,330 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 17:35:10,330 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 17:35:10,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 17:35:10,499 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (638states) and FLOYD_HOARE automaton (currently 41 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 122 known predicates. [2022-03-15 17:35:10,500 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 17:35:10,500 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 17:35:10,501 INFO L732 BasicCegarLoop]: Path program histogram: [13, 5, 4, 3, 1] [2022-03-15 17:35:10,503 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 17:35:10,503 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 17:35:10,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 05:35:10 BasicIcfg [2022-03-15 17:35:10,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 17:35:10,504 INFO L158 Benchmark]: Toolchain (without parser) took 877115.64ms. Allocated memory was 195.0MB in the beginning and 400.6MB in the end (delta: 205.5MB). Free memory was 140.4MB in the beginning and 146.8MB in the end (delta: -6.4MB). Peak memory consumption was 199.5MB. Max. memory is 8.0GB. [2022-03-15 17:35:10,505 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 17:35:10,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 538.17ms. Allocated memory was 195.0MB in the beginning and 333.4MB in the end (delta: 138.4MB). Free memory was 140.2MB in the beginning and 296.6MB in the end (delta: -156.4MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:10,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.05ms. Allocated memory is still 333.4MB. Free memory was 296.6MB in the beginning and 294.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:10,505 INFO L158 Benchmark]: Boogie Preprocessor took 34.66ms. Allocated memory is still 333.4MB. Free memory was 294.0MB in the beginning and 292.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 17:35:10,505 INFO L158 Benchmark]: RCFGBuilder took 391.08ms. Allocated memory is still 333.4MB. Free memory was 292.9MB in the beginning and 278.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-15 17:35:10,505 INFO L158 Benchmark]: TraceAbstraction took 876066.27ms. Allocated memory was 333.4MB in the beginning and 400.6MB in the end (delta: 67.1MB). Free memory was 278.8MB in the beginning and 146.8MB in the end (delta: 132.0MB). Peak memory consumption was 199.8MB. Max. memory is 8.0GB. [2022-03-15 17:35:10,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 158.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 538.17ms. Allocated memory was 195.0MB in the beginning and 333.4MB in the end (delta: 138.4MB). Free memory was 140.2MB in the beginning and 296.6MB in the end (delta: -156.4MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 81.05ms. Allocated memory is still 333.4MB. Free memory was 296.6MB in the beginning and 294.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.66ms. Allocated memory is still 333.4MB. Free memory was 294.0MB in the beginning and 292.9MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 391.08ms. Allocated memory is still 333.4MB. Free memory was 292.9MB in the beginning and 278.8MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 876066.27ms. Allocated memory was 333.4MB in the beginning and 400.6MB in the end (delta: 67.1MB). Free memory was 278.8MB in the beginning and 146.8MB in the end (delta: 132.0MB). Peak memory consumption was 199.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 96 PlacesBefore, 20 PlacesAfterwards, 96 TransitionsBefore, 16 TransitionsAfterwards, 1870 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 92 TotalNumberOfCompositions, 1462 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1325, positive: 1316, positive conditional: 0, positive unconditional: 1316, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 969, positive: 963, positive conditional: 0, positive unconditional: 963, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1325, positive: 353, positive conditional: 0, positive unconditional: 353, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 969, unknown conditional: 0, unknown unconditional: 969] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 726]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (638states) and FLOYD_HOARE automaton (currently 41 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 122 known predicates. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (638states) and FLOYD_HOARE automaton (currently 41 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 122 known predicates. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (638states) and FLOYD_HOARE automaton (currently 41 states, 56 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 122 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 876.0s, OverallIterations: 26, TraceHistogramMax: 13, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 214.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8324 SdHoareTripleChecker+Valid, 68.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8324 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 61.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48958 mSDsCounter, 1922 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 96530 IncrementalHoareTripleChecker+Invalid, 98452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1922 mSolverCounterUnsat, 0 mSDtfsCounter, 96530 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3239 GetRequests, 701 SyntacticMatches, 85 SemanticMatches, 2452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206035 ImplicationChecksByTransitivity, 643.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=638occurred in iteration=25, InterpolantAutomatonStates: 1748, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 17494 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 607.6s InterpolantComputationTime, 868 NumberOfCodeBlocks, 868 NumberOfCodeBlocksAsserted, 109 NumberOfCheckSat, 1205 ConstructedInterpolants, 160 QuantifiedInterpolants, 30969 SizeOfPredicates, 143 NumberOfNonLiveVariables, 5287 ConjunctsInSsa, 651 ConjunctsInUnsatCore, 75 InterpolantComputations, 2 PerfectInterpolantSequences, 885/4133 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