/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 00:43:23,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 00:43:23,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 00:43:23,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 00:43:23,466 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 00:43:23,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 00:43:23,468 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 00:43:23,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 00:43:23,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 00:43:23,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 00:43:23,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 00:43:23,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 00:43:23,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 00:43:23,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 00:43:23,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 00:43:23,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 00:43:23,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 00:43:23,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 00:43:23,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 00:43:23,480 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 00:43:23,481 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 00:43:23,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 00:43:23,482 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 00:43:23,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 00:43:23,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 00:43:23,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 00:43:23,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 00:43:23,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 00:43:23,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 00:43:23,486 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 00:43:23,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 00:43:23,487 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 00:43:23,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 00:43:23,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 00:43:23,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 00:43:23,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 00:43:23,489 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 00:43:23,489 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 00:43:23,489 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 00:43:23,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 00:43:23,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 00:43:23,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 00:43:23,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2022-03-20 00:43:23,504 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 00:43:23,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 00:43:23,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-20 00:43:23,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-20 00:43:23,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 00:43:23,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 00:43:23,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 00:43:23,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 00:43:23,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 00:43:23,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 00:43:23,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:43:23,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 00:43:23,508 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 00:43:23,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 00:43:23,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 00:43:23,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 00:43:23,719 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 00:43:23,723 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 00:43:23,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound100.c [2022-03-20 00:43:23,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c5e03a5/0945999abcff41d78880c1122efe1b71/FLAG7b303bd57 [2022-03-20 00:43:24,111 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 00:43:24,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound100.c [2022-03-20 00:43:24,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c5e03a5/0945999abcff41d78880c1122efe1b71/FLAG7b303bd57 [2022-03-20 00:43:24,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2c5e03a5/0945999abcff41d78880c1122efe1b71 [2022-03-20 00:43:24,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 00:43:24,554 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 00:43:24,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 00:43:24,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 00:43:24,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 00:43:24,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ffde0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24, skipping insertion in model container [2022-03-20 00:43:24,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,567 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 00:43:24,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 00:43:24,680 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound100.c[490,503] [2022-03-20 00:43:24,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:43:24,696 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 00:43:24,703 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd3-ll_valuebound100.c[490,503] [2022-03-20 00:43:24,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 00:43:24,715 INFO L208 MainTranslator]: Completed translation [2022-03-20 00:43:24,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24 WrapperNode [2022-03-20 00:43:24,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 00:43:24,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 00:43:24,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 00:43:24,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 00:43:24,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,727 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 00:43:24,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 00:43:24,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 00:43:24,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 00:43:24,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (1/1) ... [2022-03-20 00:43:24,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 00:43:24,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:24,791 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) [2022-03-20 00:43:24,811 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 [2022-03-20 00:43:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 00:43:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 00:43:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 00:43:24,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 00:43:24,839 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 00:43:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 00:43:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 00:43:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 00:43:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 00:43:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 00:43:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 00:43:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 00:43:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 00:43:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 00:43:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 00:43:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 00:43:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 00:43:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 00:43:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 00:43:24,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 00:43:24,894 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 00:43:24,895 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 00:43:25,044 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 00:43:25,049 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 00:43:25,050 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-20 00:43:25,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:43:25 BoogieIcfgContainer [2022-03-20 00:43:25,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 00:43:25,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 00:43:25,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 00:43:25,057 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 00:43:25,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:43:24" (1/3) ... [2022-03-20 00:43:25,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288c3222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:43:25, skipping insertion in model container [2022-03-20 00:43:25,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:43:24" (2/3) ... [2022-03-20 00:43:25,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288c3222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:43:25, skipping insertion in model container [2022-03-20 00:43:25,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:43:25" (3/3) ... [2022-03-20 00:43:25,065 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound100.c [2022-03-20 00:43:25,069 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 00:43:25,069 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 00:43:25,106 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 00:43:25,112 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-20 00:43:25,112 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 00:43:25,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-03-20 00:43:25,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 00:43:25,132 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:25,132 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:25,132 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:25,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:25,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1237885594, now seen corresponding path program 1 times [2022-03-20 00:43:25,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:25,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038925416] [2022-03-20 00:43:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:25,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:25,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 00:43:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 00:43:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 00:43:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 00:43:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-03-20 00:43:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:43:25,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:25,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038925416] [2022-03-20 00:43:25,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038925416] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:43:25,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:43:25,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 00:43:25,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613449237] [2022-03-20 00:43:25,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:25,348 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 00:43:25,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 00:43:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 00:43:25,373 INFO L87 Difference]: Start difference. First operand has 40 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 24 states have internal predecessors, (35), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 00:43:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:25,458 INFO L93 Difference]: Finished difference Result 73 states and 115 transitions. [2022-03-20 00:43:25,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 00:43:25,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 00:43:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:25,468 INFO L225 Difference]: With dead ends: 73 [2022-03-20 00:43:25,468 INFO L226 Difference]: Without dead ends: 35 [2022-03-20 00:43:25,471 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 00:43:25,474 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:25,475 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:25,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-20 00:43:25,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-20 00:43:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-20 00:43:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2022-03-20 00:43:25,512 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 33 [2022-03-20 00:43:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:25,512 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2022-03-20 00:43:25,513 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 00:43:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2022-03-20 00:43:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-20 00:43:25,515 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:25,515 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:25,515 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 00:43:25,516 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:25,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:25,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1569470122, now seen corresponding path program 1 times [2022-03-20 00:43:25,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:25,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433989301] [2022-03-20 00:43:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:25,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:25,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:25,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108236932] [2022-03-20 00:43:25,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:25,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:25,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:25,575 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) [2022-03-20 00:43:25,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 00:43:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:25,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 00:43:25,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 00:43:25,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:43:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:25,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433989301] [2022-03-20 00:43:25,719 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:25,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108236932] [2022-03-20 00:43:25,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108236932] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:43:25,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:43:25,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 00:43:25,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385328889] [2022-03-20 00:43:25,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:25,720 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 00:43:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 00:43:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 00:43:25,721 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:43:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:25,780 INFO L93 Difference]: Finished difference Result 54 states and 69 transitions. [2022-03-20 00:43:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:43:25,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2022-03-20 00:43:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:25,784 INFO L225 Difference]: With dead ends: 54 [2022-03-20 00:43:25,784 INFO L226 Difference]: Without dead ends: 47 [2022-03-20 00:43:25,784 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 00:43:25,785 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:25,786 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 155 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:25,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-20 00:43:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 37. [2022-03-20 00:43:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-03-20 00:43:25,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-03-20 00:43:25,800 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 34 [2022-03-20 00:43:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:25,800 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-03-20 00:43:25,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:43:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-03-20 00:43:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-20 00:43:25,801 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:25,801 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:25,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:26,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:26,019 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:26,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1443363578, now seen corresponding path program 1 times [2022-03-20 00:43:26,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:26,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853515761] [2022-03-20 00:43:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:26,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:26,064 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:26,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745897390] [2022-03-20 00:43:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:26,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:26,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:26,068 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) [2022-03-20 00:43:26,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 00:43:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-20 00:43:26,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 00:43:26,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:43:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:26,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853515761] [2022-03-20 00:43:26,467 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:26,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745897390] [2022-03-20 00:43:26,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745897390] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 00:43:26,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:43:26,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-20 00:43:26,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037118735] [2022-03-20 00:43:26,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:26,468 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:43:26,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:43:26,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 00:43:26,469 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:43:26,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:26,515 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2022-03-20 00:43:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:43:26,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 37 [2022-03-20 00:43:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:26,516 INFO L225 Difference]: With dead ends: 53 [2022-03-20 00:43:26,516 INFO L226 Difference]: Without dead ends: 51 [2022-03-20 00:43:26,516 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 00:43:26,517 INFO L913 BasicCegarLoop]: 43 mSDtfsCounter, 9 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:26,517 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 161 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-20 00:43:26,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2022-03-20 00:43:26,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.2) internal successors, (36), 31 states have internal predecessors, (36), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2022-03-20 00:43:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2022-03-20 00:43:26,523 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 37 [2022-03-20 00:43:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:26,524 INFO L478 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2022-03-20 00:43:26,524 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:43:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2022-03-20 00:43:26,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-20 00:43:26,525 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:26,525 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:26,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:26,741 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-20 00:43:26,742 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:26,742 INFO L85 PathProgramCache]: Analyzing trace with hash 584996456, now seen corresponding path program 1 times [2022-03-20 00:43:26,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:26,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063416022] [2022-03-20 00:43:26,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:26,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:26,753 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:26,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1042250009] [2022-03-20 00:43:26,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:26,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:26,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:26,754 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) [2022-03-20 00:43:26,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 00:43:26,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:26,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-20 00:43:26,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 00:43:26,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 00:43:26,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:26,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063416022] [2022-03-20 00:43:26,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:26,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042250009] [2022-03-20 00:43:26,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042250009] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:43:26,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:43:26,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-03-20 00:43:26,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127244781] [2022-03-20 00:43:26,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:43:26,982 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 00:43:26,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 00:43:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-03-20 00:43:26,983 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 00:43:27,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:27,113 INFO L93 Difference]: Finished difference Result 103 states and 143 transitions. [2022-03-20 00:43:27,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 00:43:27,113 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2022-03-20 00:43:27,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:27,114 INFO L225 Difference]: With dead ends: 103 [2022-03-20 00:43:27,114 INFO L226 Difference]: Without dead ends: 96 [2022-03-20 00:43:27,114 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:43:27,115 INFO L913 BasicCegarLoop]: 52 mSDtfsCounter, 58 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:27,115 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 295 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 00:43:27,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-03-20 00:43:27,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2022-03-20 00:43:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-20 00:43:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 95 transitions. [2022-03-20 00:43:27,125 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 95 transitions. Word has length 39 [2022-03-20 00:43:27,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:27,126 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 95 transitions. [2022-03-20 00:43:27,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 00:43:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 95 transitions. [2022-03-20 00:43:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 00:43:27,127 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:27,127 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:27,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:27,343 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:27,343 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:27,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:27,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1286298951, now seen corresponding path program 1 times [2022-03-20 00:43:27,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:27,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957541446] [2022-03-20 00:43:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:27,353 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1146593683] [2022-03-20 00:43:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:27,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:27,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:27,354 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) [2022-03-20 00:43:27,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 00:43:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:27,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-20 00:43:27,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:27,699 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 00:43:27,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:27,857 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:43:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:27,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957541446] [2022-03-20 00:43:27,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:27,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146593683] [2022-03-20 00:43:27,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146593683] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 00:43:27,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:43:27,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2022-03-20 00:43:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918127355] [2022-03-20 00:43:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:27,859 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 00:43:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 00:43:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-20 00:43:27,859 INFO L87 Difference]: Start difference. First operand 71 states and 95 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 00:43:27,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:27,910 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2022-03-20 00:43:27,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 00:43:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2022-03-20 00:43:27,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:27,911 INFO L225 Difference]: With dead ends: 79 [2022-03-20 00:43:27,911 INFO L226 Difference]: Without dead ends: 77 [2022-03-20 00:43:27,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 70 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-03-20 00:43:27,912 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 27 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:27,912 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 192 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:27,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-03-20 00:43:27,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2022-03-20 00:43:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 50 states have (on average 1.24) internal successors, (62), 51 states have internal predecessors, (62), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-20 00:43:27,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-03-20 00:43:27,921 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 42 [2022-03-20 00:43:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:27,921 INFO L478 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-03-20 00:43:27,921 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 00:43:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-03-20 00:43:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-20 00:43:27,922 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:27,922 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:27,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-20 00:43:28,136 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:28,137 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash -974923140, now seen corresponding path program 1 times [2022-03-20 00:43:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688228530] [2022-03-20 00:43:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:28,153 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:28,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428215551] [2022-03-20 00:43:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:28,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:28,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:28,155 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) [2022-03-20 00:43:28,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 00:43:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:28,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 00:43:28,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 00:43:28,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:28,610 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:43:28,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688228530] [2022-03-20 00:43:28,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:28,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428215551] [2022-03-20 00:43:28,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428215551] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:43:28,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:43:28,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 16 [2022-03-20 00:43:28,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008747711] [2022-03-20 00:43:28,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:43:28,611 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 00:43:28,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:28,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 00:43:28,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-03-20 00:43:28,612 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 00:43:28,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:28,974 INFO L93 Difference]: Finished difference Result 118 states and 159 transitions. [2022-03-20 00:43:28,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-20 00:43:28,974 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 42 [2022-03-20 00:43:28,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:28,975 INFO L225 Difference]: With dead ends: 118 [2022-03-20 00:43:28,975 INFO L226 Difference]: Without dead ends: 116 [2022-03-20 00:43:28,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2022-03-20 00:43:28,976 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 106 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:28,976 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 347 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 00:43:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-20 00:43:28,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2022-03-20 00:43:28,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 72 states have internal predecessors, (89), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-03-20 00:43:28,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 141 transitions. [2022-03-20 00:43:28,988 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 141 transitions. Word has length 42 [2022-03-20 00:43:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:28,988 INFO L478 AbstractCegarLoop]: Abstraction has 105 states and 141 transitions. [2022-03-20 00:43:28,988 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 13 states have internal predecessors, (35), 5 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-03-20 00:43:28,988 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 141 transitions. [2022-03-20 00:43:28,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 00:43:28,989 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:28,989 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:29,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:29,209 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:29,210 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:29,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:29,210 INFO L85 PathProgramCache]: Analyzing trace with hash 81990170, now seen corresponding path program 1 times [2022-03-20 00:43:29,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:29,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747106698] [2022-03-20 00:43:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:29,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:29,220 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:29,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [869606214] [2022-03-20 00:43:29,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:29,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:29,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:29,222 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) [2022-03-20 00:43:29,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 00:43:29,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:29,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 00:43:29,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:29,329 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-03-20 00:43:29,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:43:29,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:29,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747106698] [2022-03-20 00:43:29,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:29,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869606214] [2022-03-20 00:43:29,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869606214] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:43:29,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:43:29,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 00:43:29,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43565738] [2022-03-20 00:43:29,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:29,330 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:43:29,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:29,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:43:29,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 00:43:29,331 INFO L87 Difference]: Start difference. First operand 105 states and 141 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 00:43:29,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:29,369 INFO L93 Difference]: Finished difference Result 151 states and 213 transitions. [2022-03-20 00:43:29,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:43:29,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-03-20 00:43:29,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:29,370 INFO L225 Difference]: With dead ends: 151 [2022-03-20 00:43:29,370 INFO L226 Difference]: Without dead ends: 149 [2022-03-20 00:43:29,371 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 00:43:29,371 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:29,371 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 151 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-03-20 00:43:29,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 143. [2022-03-20 00:43:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 88 states have (on average 1.2840909090909092) internal successors, (113), 89 states have internal predecessors, (113), 47 states have call successors, (47), 8 states have call predecessors, (47), 7 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2022-03-20 00:43:29,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 205 transitions. [2022-03-20 00:43:29,387 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 205 transitions. Word has length 47 [2022-03-20 00:43:29,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:29,387 INFO L478 AbstractCegarLoop]: Abstraction has 143 states and 205 transitions. [2022-03-20 00:43:29,387 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 00:43:29,387 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 205 transitions. [2022-03-20 00:43:29,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 00:43:29,388 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:29,388 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:29,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:29,604 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:29,604 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:29,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1524769911, now seen corresponding path program 1 times [2022-03-20 00:43:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:29,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880078951] [2022-03-20 00:43:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:29,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:29,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358745481] [2022-03-20 00:43:29,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:29,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:29,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:29,628 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) [2022-03-20 00:43:29,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 00:43:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:29,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-20 00:43:29,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:30,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-03-20 00:43:30,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:30,177 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:43:30,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880078951] [2022-03-20 00:43:30,177 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358745481] [2022-03-20 00:43:30,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358745481] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:43:30,178 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:43:30,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 17 [2022-03-20 00:43:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432672097] [2022-03-20 00:43:30,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:43:30,178 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-20 00:43:30,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-20 00:43:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-03-20 00:43:30,179 INFO L87 Difference]: Start difference. First operand 143 states and 205 transitions. Second operand has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-20 00:43:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:30,585 INFO L93 Difference]: Finished difference Result 194 states and 277 transitions. [2022-03-20 00:43:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-20 00:43:30,585 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 47 [2022-03-20 00:43:30,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:30,588 INFO L225 Difference]: With dead ends: 194 [2022-03-20 00:43:30,588 INFO L226 Difference]: Without dead ends: 192 [2022-03-20 00:43:30,588 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2022-03-20 00:43:30,589 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 102 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:30,589 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 370 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 356 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-03-20 00:43:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-03-20 00:43:30,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 166. [2022-03-20 00:43:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 104 states have (on average 1.2692307692307692) internal successors, (132), 108 states have internal predecessors, (132), 53 states have call successors, (53), 9 states have call predecessors, (53), 8 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2022-03-20 00:43:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 236 transitions. [2022-03-20 00:43:30,609 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 236 transitions. Word has length 47 [2022-03-20 00:43:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:30,609 INFO L478 AbstractCegarLoop]: Abstraction has 166 states and 236 transitions. [2022-03-20 00:43:30,609 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.411764705882353) internal successors, (41), 15 states have internal predecessors, (41), 4 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-03-20 00:43:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 236 transitions. [2022-03-20 00:43:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-20 00:43:30,610 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:30,610 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:30,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:30,823 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:30,823 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1836145722, now seen corresponding path program 2 times [2022-03-20 00:43:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:30,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8317316] [2022-03-20 00:43:30,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:30,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:30,830 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:30,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005861537] [2022-03-20 00:43:30,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 00:43:30,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:30,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:30,834 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) [2022-03-20 00:43:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 00:43:30,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 00:43:30,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:43:30,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-20 00:43:30,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:30,915 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 00:43:30,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:43:30,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:30,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8317316] [2022-03-20 00:43:30,915 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:30,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005861537] [2022-03-20 00:43:30,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005861537] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:43:30,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:43:30,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 00:43:30,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147988093] [2022-03-20 00:43:30,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:30,918 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:43:30,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:30,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:43:30,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 00:43:30,919 INFO L87 Difference]: Start difference. First operand 166 states and 236 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:43:30,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:30,972 INFO L93 Difference]: Finished difference Result 212 states and 296 transitions. [2022-03-20 00:43:30,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:43:30,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2022-03-20 00:43:30,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:30,974 INFO L225 Difference]: With dead ends: 212 [2022-03-20 00:43:30,974 INFO L226 Difference]: Without dead ends: 136 [2022-03-20 00:43:30,976 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-03-20 00:43:30,978 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:30,978 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 180 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-03-20 00:43:30,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 113. [2022-03-20 00:43:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 72 states have internal predecessors, (82), 35 states have call successors, (35), 9 states have call predecessors, (35), 8 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2022-03-20 00:43:30,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 150 transitions. [2022-03-20 00:43:30,996 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 150 transitions. Word has length 47 [2022-03-20 00:43:30,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:30,997 INFO L478 AbstractCegarLoop]: Abstraction has 113 states and 150 transitions. [2022-03-20 00:43:30,997 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-03-20 00:43:30,997 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 150 transitions. [2022-03-20 00:43:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-20 00:43:31,000 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:31,000 INFO L499 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:31,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:31,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-20 00:43:31,219 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:31,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1952108775, now seen corresponding path program 1 times [2022-03-20 00:43:31,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:31,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784846244] [2022-03-20 00:43:31,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:31,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:31,227 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:31,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48789231] [2022-03-20 00:43:31,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:31,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:31,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:31,228 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) [2022-03-20 00:43:31,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 00:43:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:31,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 00:43:31,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:31,350 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-03-20 00:43:31,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:43:31,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784846244] [2022-03-20 00:43:31,351 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:31,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48789231] [2022-03-20 00:43:31,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48789231] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:43:31,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:43:31,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 00:43:31,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103523040] [2022-03-20 00:43:31,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:31,351 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:43:31,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:31,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:43:31,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 00:43:31,352 INFO L87 Difference]: Start difference. First operand 113 states and 150 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 00:43:31,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:31,393 INFO L93 Difference]: Finished difference Result 163 states and 230 transitions. [2022-03-20 00:43:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:43:31,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-03-20 00:43:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:31,394 INFO L225 Difference]: With dead ends: 163 [2022-03-20 00:43:31,395 INFO L226 Difference]: Without dead ends: 161 [2022-03-20 00:43:31,395 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 00:43:31,395 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 9 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:31,395 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 162 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-03-20 00:43:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 144. [2022-03-20 00:43:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 77 states have (on average 1.1688311688311688) internal successors, (90), 85 states have internal predecessors, (90), 57 states have call successors, (57), 10 states have call predecessors, (57), 9 states have return successors, (55), 48 states have call predecessors, (55), 55 states have call successors, (55) [2022-03-20 00:43:31,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 202 transitions. [2022-03-20 00:43:31,413 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 202 transitions. Word has length 52 [2022-03-20 00:43:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:31,413 INFO L478 AbstractCegarLoop]: Abstraction has 144 states and 202 transitions. [2022-03-20 00:43:31,413 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-03-20 00:43:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 202 transitions. [2022-03-20 00:43:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-03-20 00:43:31,414 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:31,414 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:31,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:31,630 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-20 00:43:31,630 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:31,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:31,631 INFO L85 PathProgramCache]: Analyzing trace with hash 188363668, now seen corresponding path program 1 times [2022-03-20 00:43:31,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:31,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753221410] [2022-03-20 00:43:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:31,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:31,638 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:31,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [218361620] [2022-03-20 00:43:31,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:31,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:31,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:31,639 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) [2022-03-20 00:43:31,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 00:43:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:31,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-20 00:43:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:31,956 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-20 00:43:31,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-03-20 00:43:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753221410] [2022-03-20 00:43:32,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:32,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218361620] [2022-03-20 00:43:32,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218361620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:43:32,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:43:32,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-20 00:43:32,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349013188] [2022-03-20 00:43:32,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:43:32,243 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 00:43:32,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:32,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 00:43:32,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-03-20 00:43:32,243 INFO L87 Difference]: Start difference. First operand 144 states and 202 transitions. Second operand has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 00:43:35,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:35,658 INFO L93 Difference]: Finished difference Result 331 states and 487 transitions. [2022-03-20 00:43:35,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-20 00:43:35,659 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 64 [2022-03-20 00:43:35,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:35,661 INFO L225 Difference]: With dead ends: 331 [2022-03-20 00:43:35,661 INFO L226 Difference]: Without dead ends: 326 [2022-03-20 00:43:35,661 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=275, Invalid=1057, Unknown=0, NotChecked=0, Total=1332 [2022-03-20 00:43:35,662 INFO L913 BasicCegarLoop]: 79 mSDtfsCounter, 146 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:35,662 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 488 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-20 00:43:35,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-20 00:43:35,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 250. [2022-03-20 00:43:35,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 146 states have (on average 1.1986301369863013) internal successors, (175), 153 states have internal predecessors, (175), 89 states have call successors, (89), 15 states have call predecessors, (89), 14 states have return successors, (87), 81 states have call predecessors, (87), 87 states have call successors, (87) [2022-03-20 00:43:35,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 351 transitions. [2022-03-20 00:43:35,740 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 351 transitions. Word has length 64 [2022-03-20 00:43:35,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:35,740 INFO L478 AbstractCegarLoop]: Abstraction has 250 states and 351 transitions. [2022-03-20 00:43:35,741 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 15 states have internal predecessors, (39), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 00:43:35,741 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 351 transitions. [2022-03-20 00:43:35,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-03-20 00:43:35,741 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:35,741 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:35,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:35,973 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-20 00:43:35,973 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:35,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:35,974 INFO L85 PathProgramCache]: Analyzing trace with hash -298771846, now seen corresponding path program 1 times [2022-03-20 00:43:35,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:35,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160319485] [2022-03-20 00:43:35,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:35,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:35,993 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:35,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353786481] [2022-03-20 00:43:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:35,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:35,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:35,996 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) [2022-03-20 00:43:35,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 00:43:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:36,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 00:43:36,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-03-20 00:43:36,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-03-20 00:43:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160319485] [2022-03-20 00:43:36,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:36,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353786481] [2022-03-20 00:43:36,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353786481] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 00:43:36,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 00:43:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-03-20 00:43:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488208486] [2022-03-20 00:43:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:36,292 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:43:36,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:43:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-20 00:43:36,292 INFO L87 Difference]: Start difference. First operand 250 states and 351 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 00:43:36,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:36,361 INFO L93 Difference]: Finished difference Result 256 states and 356 transitions. [2022-03-20 00:43:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 00:43:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2022-03-20 00:43:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:36,365 INFO L225 Difference]: With dead ends: 256 [2022-03-20 00:43:36,365 INFO L226 Difference]: Without dead ends: 254 [2022-03-20 00:43:36,365 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-03-20 00:43:36,365 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:36,366 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 145 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-03-20 00:43:36,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-03-20 00:43:36,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 149 states have (on average 1.1946308724832215) internal successors, (178), 156 states have internal predecessors, (178), 89 states have call successors, (89), 16 states have call predecessors, (89), 15 states have return successors, (87), 81 states have call predecessors, (87), 87 states have call successors, (87) [2022-03-20 00:43:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 354 transitions. [2022-03-20 00:43:36,409 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 354 transitions. Word has length 74 [2022-03-20 00:43:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:36,410 INFO L478 AbstractCegarLoop]: Abstraction has 254 states and 354 transitions. [2022-03-20 00:43:36,410 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 00:43:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 354 transitions. [2022-03-20 00:43:36,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-03-20 00:43:36,410 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:36,410 INFO L499 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:36,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-03-20 00:43:36,626 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-20 00:43:36,627 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:36,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:36,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2089538094, now seen corresponding path program 1 times [2022-03-20 00:43:36,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:36,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604627100] [2022-03-20 00:43:36,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:36,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:36,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:36,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767640620] [2022-03-20 00:43:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:36,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:36,641 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) [2022-03-20 00:43:36,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 00:43:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:43:36,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-20 00:43:36,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-03-20 00:43:36,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:37,107 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-03-20 00:43:37,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604627100] [2022-03-20 00:43:37,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:37,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767640620] [2022-03-20 00:43:37,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767640620] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:43:37,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:43:37,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2022-03-20 00:43:37,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743086823] [2022-03-20 00:43:37,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:43:37,109 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 00:43:37,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:37,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 00:43:37,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-03-20 00:43:37,109 INFO L87 Difference]: Start difference. First operand 254 states and 354 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 00:43:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:37,531 INFO L93 Difference]: Finished difference Result 323 states and 461 transitions. [2022-03-20 00:43:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-20 00:43:37,532 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 72 [2022-03-20 00:43:37,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:37,533 INFO L225 Difference]: With dead ends: 323 [2022-03-20 00:43:37,533 INFO L226 Difference]: Without dead ends: 321 [2022-03-20 00:43:37,534 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-03-20 00:43:37,534 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 73 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:37,534 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 332 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-20 00:43:37,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-03-20 00:43:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 258. [2022-03-20 00:43:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 152 states have (on average 1.1907894736842106) internal successors, (181), 159 states have internal predecessors, (181), 89 states have call successors, (89), 17 states have call predecessors, (89), 16 states have return successors, (87), 81 states have call predecessors, (87), 87 states have call successors, (87) [2022-03-20 00:43:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 357 transitions. [2022-03-20 00:43:37,578 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 357 transitions. Word has length 72 [2022-03-20 00:43:37,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:37,579 INFO L478 AbstractCegarLoop]: Abstraction has 258 states and 357 transitions. [2022-03-20 00:43:37,579 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-03-20 00:43:37,579 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 357 transitions. [2022-03-20 00:43:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 00:43:37,582 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:37,582 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:37,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:37,795 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-20 00:43:37,795 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:37,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1984914564, now seen corresponding path program 2 times [2022-03-20 00:43:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129454418] [2022-03-20 00:43:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:37,801 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:37,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1086147782] [2022-03-20 00:43:37,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 00:43:37,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:37,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:37,803 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) [2022-03-20 00:43:37,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-20 00:43:37,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 00:43:37,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:43:37,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 00:43:37,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-03-20 00:43:37,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 00:43:37,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:37,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129454418] [2022-03-20 00:43:37,970 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:37,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086147782] [2022-03-20 00:43:37,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086147782] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 00:43:37,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 00:43:37,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 00:43:37,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631923308] [2022-03-20 00:43:37,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 00:43:37,971 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 00:43:37,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 00:43:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 00:43:37,971 INFO L87 Difference]: Start difference. First operand 258 states and 357 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-20 00:43:38,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:43:38,050 INFO L93 Difference]: Finished difference Result 444 states and 610 transitions. [2022-03-20 00:43:38,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 00:43:38,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2022-03-20 00:43:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:43:38,052 INFO L225 Difference]: With dead ends: 444 [2022-03-20 00:43:38,052 INFO L226 Difference]: Without dead ends: 266 [2022-03-20 00:43:38,053 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-03-20 00:43:38,053 INFO L913 BasicCegarLoop]: 45 mSDtfsCounter, 3 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 00:43:38,053 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 00:43:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-03-20 00:43:38,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 257. [2022-03-20 00:43:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 161 states have internal predecessors, (187), 81 states have call successors, (81), 17 states have call predecessors, (81), 16 states have return successors, (79), 78 states have call predecessors, (79), 79 states have call successors, (79) [2022-03-20 00:43:38,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 347 transitions. [2022-03-20 00:43:38,098 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 347 transitions. Word has length 77 [2022-03-20 00:43:38,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:43:38,099 INFO L478 AbstractCegarLoop]: Abstraction has 257 states and 347 transitions. [2022-03-20 00:43:38,099 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-03-20 00:43:38,099 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 347 transitions. [2022-03-20 00:43:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-03-20 00:43:38,099 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:43:38,100 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:43:38,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-20 00:43:38,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-20 00:43:38,316 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:43:38,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:43:38,317 INFO L85 PathProgramCache]: Analyzing trace with hash -867272991, now seen corresponding path program 3 times [2022-03-20 00:43:38,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:43:38,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732788126] [2022-03-20 00:43:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:43:38,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:43:38,323 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:43:38,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986897998] [2022-03-20 00:43:38,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 00:43:38,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:43:38,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:43:38,324 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) [2022-03-20 00:43:38,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-20 00:43:38,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-20 00:43:38,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 00:43:38,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 60 conjunts are in the unsatisfiable core [2022-03-20 00:43:38,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:43:39,027 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 22 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-20 00:43:39,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:43:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-03-20 00:43:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:43:39,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732788126] [2022-03-20 00:43:39,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:43:39,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986897998] [2022-03-20 00:43:39,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986897998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:43:39,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:43:39,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-03-20 00:43:39,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699267331] [2022-03-20 00:43:39,993 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:43:39,994 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-20 00:43:39,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:43:39,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-20 00:43:40,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2022-03-20 00:43:40,015 INFO L87 Difference]: Start difference. First operand 257 states and 347 transitions. Second operand has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-03-20 00:44:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:44:03,058 INFO L93 Difference]: Finished difference Result 424 states and 583 transitions. [2022-03-20 00:44:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-20 00:44:03,060 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 77 [2022-03-20 00:44:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:44:03,061 INFO L225 Difference]: With dead ends: 424 [2022-03-20 00:44:03,061 INFO L226 Difference]: Without dead ends: 422 [2022-03-20 00:44:03,063 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=692, Invalid=2388, Unknown=0, NotChecked=0, Total=3080 [2022-03-20 00:44:03,064 INFO L913 BasicCegarLoop]: 75 mSDtfsCounter, 256 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-03-20 00:44:03,065 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 718 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-03-20 00:44:03,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-03-20 00:44:03,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 359. [2022-03-20 00:44:03,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 218 states have (on average 1.1926605504587156) internal successors, (260), 219 states have internal predecessors, (260), 119 states have call successors, (119), 22 states have call predecessors, (119), 21 states have return successors, (117), 117 states have call predecessors, (117), 117 states have call successors, (117) [2022-03-20 00:44:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 496 transitions. [2022-03-20 00:44:03,164 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 496 transitions. Word has length 77 [2022-03-20 00:44:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:44:03,164 INFO L478 AbstractCegarLoop]: Abstraction has 359 states and 496 transitions. [2022-03-20 00:44:03,164 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1153846153846154) internal successors, (55), 25 states have internal predecessors, (55), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-03-20 00:44:03,164 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 496 transitions. [2022-03-20 00:44:03,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-20 00:44:03,165 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:44:03,165 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:44:03,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-20 00:44:03,397 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:44:03,398 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:44:03,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:44:03,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1455197645, now seen corresponding path program 1 times [2022-03-20 00:44:03,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:44:03,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412438770] [2022-03-20 00:44:03,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:44:03,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:44:03,407 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:44:03,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160815252] [2022-03-20 00:44:03,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:44:03,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:44:03,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:44:03,408 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) [2022-03-20 00:44:03,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-20 00:44:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:44:03,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 94 conjunts are in the unsatisfiable core [2022-03-20 00:44:03,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:44:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 56 proven. 24 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-03-20 00:44:04,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:44:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 73 proven. 4 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-03-20 00:44:19,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:44:19,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412438770] [2022-03-20 00:44:19,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:44:19,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160815252] [2022-03-20 00:44:19,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160815252] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:44:19,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:44:19,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 24 [2022-03-20 00:44:19,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407829215] [2022-03-20 00:44:19,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:44:19,782 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-20 00:44:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:44:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-20 00:44:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-03-20 00:44:19,783 INFO L87 Difference]: Start difference. First operand 359 states and 496 transitions. Second operand has 24 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2022-03-20 00:44:27,216 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 00:44:28,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:44:28,488 INFO L93 Difference]: Finished difference Result 468 states and 639 transitions. [2022-03-20 00:44:28,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-20 00:44:28,488 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 91 [2022-03-20 00:44:28,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:44:28,490 INFO L225 Difference]: With dead ends: 468 [2022-03-20 00:44:28,490 INFO L226 Difference]: Without dead ends: 464 [2022-03-20 00:44:28,491 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 170 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=503, Invalid=2047, Unknown=0, NotChecked=0, Total=2550 [2022-03-20 00:44:28,491 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 141 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1205 mSolverCounterSat, 341 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 1205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-03-20 00:44:28,491 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 576 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 1205 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2022-03-20 00:44:28,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-03-20 00:44:28,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 370. [2022-03-20 00:44:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 213 states have (on average 1.192488262910798) internal successors, (254), 213 states have internal predecessors, (254), 130 states have call successors, (130), 27 states have call predecessors, (130), 26 states have return successors, (129), 129 states have call predecessors, (129), 129 states have call successors, (129) [2022-03-20 00:44:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 513 transitions. [2022-03-20 00:44:28,587 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 513 transitions. Word has length 91 [2022-03-20 00:44:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:44:28,587 INFO L478 AbstractCegarLoop]: Abstraction has 370 states and 513 transitions. [2022-03-20 00:44:28,587 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2022-03-20 00:44:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 513 transitions. [2022-03-20 00:44:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-20 00:44:28,588 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:44:28,588 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:44:28,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-20 00:44:28,804 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-20 00:44:28,804 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:44:28,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:44:28,805 INFO L85 PathProgramCache]: Analyzing trace with hash -801999833, now seen corresponding path program 1 times [2022-03-20 00:44:28,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:44:28,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636088807] [2022-03-20 00:44:28,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:44:28,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:44:28,810 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:44:28,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790695929] [2022-03-20 00:44:28,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:44:28,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:44:28,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:44:28,813 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) [2022-03-20 00:44:28,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-20 00:44:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:44:28,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-20 00:44:28,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:44:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-03-20 00:44:29,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:44:29,663 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-03-20 00:44:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:44:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636088807] [2022-03-20 00:44:29,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:44:29,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790695929] [2022-03-20 00:44:29,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790695929] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:44:29,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:44:29,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-03-20 00:44:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643139804] [2022-03-20 00:44:29,664 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:44:29,664 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-20 00:44:29,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:44:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-20 00:44:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-03-20 00:44:29,665 INFO L87 Difference]: Start difference. First operand 370 states and 513 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-20 00:44:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:44:31,141 INFO L93 Difference]: Finished difference Result 897 states and 1392 transitions. [2022-03-20 00:44:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 00:44:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 94 [2022-03-20 00:44:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:44:31,145 INFO L225 Difference]: With dead ends: 897 [2022-03-20 00:44:31,145 INFO L226 Difference]: Without dead ends: 895 [2022-03-20 00:44:31,146 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-03-20 00:44:31,146 INFO L913 BasicCegarLoop]: 85 mSDtfsCounter, 88 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 00:44:31,146 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 509 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 00:44:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-03-20 00:44:31,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 823. [2022-03-20 00:44:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 395 states have (on average 1.3063291139240507) internal successors, (516), 395 states have internal predecessors, (516), 398 states have call successors, (398), 30 states have call predecessors, (398), 29 states have return successors, (397), 397 states have call predecessors, (397), 397 states have call successors, (397) [2022-03-20 00:44:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1311 transitions. [2022-03-20 00:44:31,466 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1311 transitions. Word has length 94 [2022-03-20 00:44:31,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:44:31,466 INFO L478 AbstractCegarLoop]: Abstraction has 823 states and 1311 transitions. [2022-03-20 00:44:31,466 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 7 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-03-20 00:44:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1311 transitions. [2022-03-20 00:44:31,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-03-20 00:44:31,467 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 00:44:31,467 INFO L499 BasicCegarLoop]: trace histogram [10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:44:31,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-20 00:44:31,697 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-20 00:44:31,698 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 00:44:31,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 00:44:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash 640779908, now seen corresponding path program 1 times [2022-03-20 00:44:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 00:44:31,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113856145] [2022-03-20 00:44:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:44:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 00:44:31,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 00:44:31,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999881440] [2022-03-20 00:44:31,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 00:44:31,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 00:44:31,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 00:44:31,714 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) [2022-03-20 00:44:31,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-20 00:44:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 00:44:31,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 53 conjunts are in the unsatisfiable core [2022-03-20 00:44:31,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 00:44:32,327 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 43 proven. 37 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-03-20 00:44:32,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 00:44:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 38 proven. 24 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-03-20 00:44:32,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 00:44:32,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113856145] [2022-03-20 00:44:32,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 00:44:32,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999881440] [2022-03-20 00:44:32,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999881440] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 00:44:32,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 00:44:32,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2022-03-20 00:44:32,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817215320] [2022-03-20 00:44:32,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 00:44:32,809 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-20 00:44:32,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 00:44:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-20 00:44:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-03-20 00:44:32,809 INFO L87 Difference]: Start difference. First operand 823 states and 1311 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 7 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-20 00:44:38,546 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 00:44:40,548 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 00:44:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 00:44:43,600 INFO L93 Difference]: Finished difference Result 929 states and 1490 transitions. [2022-03-20 00:44:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 00:44:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 7 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 7 states have call successors, (23) Word has length 94 [2022-03-20 00:44:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 00:44:43,601 INFO L225 Difference]: With dead ends: 929 [2022-03-20 00:44:43,601 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 00:44:43,603 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 165 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=230, Invalid=892, Unknown=0, NotChecked=0, Total=1122 [2022-03-20 00:44:43,604 INFO L913 BasicCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 221 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-03-20 00:44:43,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 470 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 575 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-03-20 00:44:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 00:44:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 00:44:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 00:44:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 00:44:43,605 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2022-03-20 00:44:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 00:44:43,605 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 00:44:43,605 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 20 states have internal predecessors, (54), 7 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (23), 9 states have call predecessors, (23), 7 states have call successors, (23) [2022-03-20 00:44:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 00:44:43,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 00:44:43,607 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 00:44:43,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-20 00:44:43,822 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-20 00:44:43,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 00:44:49,416 WARN L232 SmtUtils]: Spent 5.26s on a formula simplification. DAG size of input: 459 DAG size of output: 464 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-20 00:44:54,695 WARN L232 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 463 DAG size of output: 460 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-20 00:45:04,438 WARN L232 SmtUtils]: Spent 9.74s on a formula simplification. DAG size of input: 406 DAG size of output: 401 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-20 00:45:09,601 WARN L232 SmtUtils]: Spent 5.16s on a formula simplification. DAG size of input: 464 DAG size of output: 463 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-20 00:45:16,657 WARN L232 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 480 DAG size of output: 468 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-20 00:45:23,793 WARN L232 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 480 DAG size of output: 468 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-03-20 00:45:33,370 WARN L232 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 165 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:47:06,540 WARN L232 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 387 DAG size of output: 58 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:49:02,177 WARN L232 SmtUtils]: Spent 1.93m on a formula simplification. DAG size of input: 383 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:49:18,341 WARN L232 SmtUtils]: Spent 16.16s on a formula simplification. DAG size of input: 327 DAG size of output: 65 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:50:05,794 WARN L232 SmtUtils]: Spent 47.45s on a formula simplification. DAG size of input: 386 DAG size of output: 51 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:50:54,074 WARN L232 SmtUtils]: Spent 48.28s on a formula simplification. DAG size of input: 396 DAG size of output: 53 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:51:34,512 WARN L232 SmtUtils]: Spent 40.43s on a formula simplification. DAG size of input: 396 DAG size of output: 53 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2022-03-20 00:51:34,515 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-03-20 00:51:34,515 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse3 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse0 (= main_~a~0 .cse3)) (.cse1 (<= main_~y~0 100)) (.cse2 (<= 1 main_~y~0))) (or (and (= main_~s~0 1) .cse0 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) .cse1 (= main_~q~0 0) .cse2 (= main_~a~0 main_~x~0) (= main_~p~0 1)) (and (< main_~b~0 main_~a~0) (or (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) (not (<= (* main_~b~0 3) main_~c~0)) (<= (* main_~b~0 4) main_~c~0)) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) .cse0 (or (= .cse3 (+ (* main_~k~0 main_~y~0 main_~s~0) main_~c~0 (* main_~q~0 main_~k~0 main_~x~0))) (<= main_~b~0 main_~c~0)) .cse1 .cse2)))) [2022-03-20 00:51:34,515 INFO L878 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse0 (* main_~q~0 main_~x~0)) (.cse1 (* main_~y~0 main_~s~0))) (let ((.cse2 (= main_~b~0 (+ .cse0 .cse1)))) (and (< main_~b~0 main_~a~0) (<= 1 main_~x~0) (= (+ .cse0 main_~a~0 .cse1) (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (or .cse2 (= main_~b~0 0)) (<= main_~y~0 100) (or .cse2 (<= main_~b~0 main_~c~0)) (<= 1 main_~y~0)))) [2022-03-20 00:51:34,515 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 18 76) no Hoare annotation was computed. [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse6 (* main_~y~0 main_~r~0)) (.cse7 (* main_~p~0 main_~x~0))) (let ((.cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse1 (<= 1 main_~x~0)) (.cse2 (= main_~a~0 (+ .cse6 .cse7))) (.cse3 (= (+ (* main_~d~0 main_~y~0 main_~s~0) (* main_~k~0 main_~y~0 main_~s~0) main_~c~0 (* main_~q~0 main_~k~0 main_~x~0) (* main_~d~0 main_~q~0 main_~x~0)) (+ .cse6 main_~v~0 .cse7))) (.cse4 (<= main_~y~0 100)) (.cse5 (<= 1 main_~y~0))) (or (and (< main_~b~0 main_~a~0) .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 (= main_~s~0 1) .cse2 .cse3 (= main_~b~0 main_~y~0) .cse4 (= main_~q~0 0) (<= main_~x~0 main_~a~0) .cse5 (= main_~p~0 1))))) [2022-03-20 00:51:34,516 INFO L882 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-03-20 00:51:34,516 INFO L885 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 100)) [2022-03-20 00:51:34,516 INFO L882 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse4 (* main_~y~0 main_~r~0)) (.cse5 (* main_~p~0 main_~x~0))) (let ((.cse0 (= main_~a~0 (+ .cse4 .cse5))) (.cse1 (= (+ (* main_~d~0 main_~y~0 main_~s~0) (* main_~k~0 main_~y~0 main_~s~0) main_~c~0 (* main_~q~0 main_~k~0 main_~x~0) (* main_~d~0 main_~q~0 main_~x~0)) (+ .cse4 main_~v~0 .cse5))) (.cse2 (<= main_~y~0 100)) (.cse3 (<= 1 main_~y~0))) (or (and (< main_~b~0 main_~a~0) (= main_~v~0 (* main_~d~0 main_~b~0)) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) .cse0 .cse1 .cse2 .cse3) (and (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) (= main_~s~0 1) .cse0 .cse1 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) .cse2 (= main_~q~0 0) .cse3 (= main_~a~0 main_~x~0) (= main_~p~0 1))))) [2022-03-20 00:51:34,516 INFO L882 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-03-20 00:51:34,516 INFO L882 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 100)) [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse4 (* main_~y~0 main_~r~0)) (.cse5 (* main_~p~0 main_~x~0))) (let ((.cse0 (= main_~a~0 (+ .cse4 .cse5))) (.cse1 (= (+ (* main_~d~0 main_~y~0 main_~s~0) (* main_~k~0 main_~y~0 main_~s~0) main_~c~0 (* main_~q~0 main_~k~0 main_~x~0) (* main_~d~0 main_~q~0 main_~x~0)) (+ .cse4 main_~v~0 .cse5))) (.cse2 (<= main_~y~0 100)) (.cse3 (<= 1 main_~y~0))) (or (and (< main_~b~0 main_~a~0) (= main_~v~0 (* main_~d~0 main_~b~0)) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (<= 1 main_~x~0) .cse0 .cse1 .cse2 .cse3) (and (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) (= main_~s~0 1) .cse0 .cse1 (<= 1 main_~a~0) (= main_~b~0 main_~y~0) .cse2 (= main_~q~0 0) .cse3 (= main_~a~0 main_~x~0) (= main_~p~0 1))))) [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse4 (* main_~y~0 main_~r~0)) (.cse5 (* main_~p~0 main_~x~0))) (let ((.cse2 (* main_~k~0 main_~y~0 main_~s~0)) (.cse3 (* main_~q~0 main_~k~0 main_~x~0)) (.cse0 (<= 1 main_~x~0)) (.cse1 (= main_~a~0 (+ .cse4 .cse5))) (.cse6 (<= main_~y~0 100)) (.cse7 (<= 1 main_~y~0))) (or (and (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse0 (= main_~s~0 1) .cse1 (= (+ (* main_~d~0 main_~y~0 main_~s~0) .cse2 main_~c~0 .cse3 (* main_~d~0 main_~q~0 main_~x~0)) (+ .cse4 main_~v~0 .cse5)) (= main_~b~0 main_~y~0) .cse6 (= main_~q~0 0) (<= main_~x~0 main_~a~0) .cse7 (= main_~p~0 1)) (let ((.cse9 (* main_~q~0 main_~x~0)) (.cse8 (* main_~y~0 main_~s~0))) (and (< main_~b~0 main_~a~0) (= main_~v~0 (* main_~d~0 main_~b~0)) (= (+ (* 2 .cse8) (* .cse9 2) .cse2 main_~c~0 .cse3) (+ .cse4 .cse5 (* main_~b~0 2))) (= main_~b~0 (+ .cse9 .cse8)) .cse0 .cse1 .cse6 .cse7))))) [2022-03-20 00:51:34,516 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 18 76) no Hoare annotation was computed. [2022-03-20 00:51:34,516 INFO L878 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse10 (* main_~y~0 main_~r~0)) (.cse11 (* main_~p~0 main_~x~0)) (.cse18 (* main_~q~0 main_~x~0)) (.cse17 (* main_~y~0 main_~s~0))) (let ((.cse6 (= main_~v~0 (* main_~d~0 main_~b~0))) (.cse8 (* main_~k~0 main_~y~0 main_~s~0)) (.cse9 (* main_~q~0 main_~k~0 main_~x~0)) (.cse0 (= main_~b~0 (+ .cse18 .cse17))) (.cse1 (<= 1 main_~x~0)) (.cse2 (= main_~k~0 0)) (.cse7 (= main_~s~0 1)) (.cse3 (= main_~a~0 (+ .cse10 .cse11))) (.cse12 (<= 1 main_~a~0)) (.cse13 (= main_~b~0 main_~y~0)) (.cse4 (<= main_~y~0 100)) (.cse14 (= main_~q~0 0)) (.cse5 (<= 1 main_~y~0)) (.cse15 (= main_~a~0 main_~x~0)) (.cse16 (= main_~p~0 1))) (or (and (= main_~c~0 main_~a~0) .cse0 .cse1 .cse2 .cse3 (< main_~b~0 main_~c~0) .cse4 .cse5) (and .cse6 .cse7 .cse3 (= (+ (* main_~d~0 main_~y~0 main_~s~0) .cse8 main_~c~0 .cse9 (* main_~d~0 main_~q~0 main_~x~0)) (+ .cse10 main_~v~0 .cse11)) .cse12 .cse13 .cse4 .cse14 .cse5 .cse15 .cse16) (and (< main_~b~0 main_~a~0) .cse6 (= (+ (* 2 .cse17) (* .cse18 2) .cse8 main_~c~0 .cse9) (+ .cse10 .cse11 (* main_~b~0 2))) .cse0 .cse1 .cse3 .cse4 .cse5) (and .cse2 .cse7 .cse3 .cse12 .cse13 .cse4 .cse14 .cse5 .cse15 (= main_~c~0 main_~x~0) .cse16)))) [2022-03-20 00:51:34,516 INFO L882 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 76) the Hoare annotation is: true [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L878 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse5 (* main_~y~0 main_~r~0)) (.cse6 (* main_~p~0 main_~x~0))) (let ((.cse0 (<= 1 main_~x~0)) (.cse1 (= main_~a~0 (+ .cse5 .cse6))) (.cse2 (= (+ (* main_~d~0 main_~y~0 main_~s~0) (* main_~k~0 main_~y~0 main_~s~0) main_~c~0 (* main_~q~0 main_~k~0 main_~x~0) (* main_~d~0 main_~q~0 main_~x~0)) (+ .cse5 main_~v~0 .cse6))) (.cse3 (<= main_~y~0 100)) (.cse4 (<= 1 main_~y~0))) (or (and (< main_~b~0 main_~a~0) (= main_~v~0 (* main_~d~0 main_~b~0)) (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0))) .cse0 (= main_~s~0 1) .cse1 .cse2 (= main_~b~0 main_~y~0) .cse3 (= main_~q~0 0) (<= main_~x~0 main_~a~0) .cse4 (= main_~p~0 1))))) [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 00:51:34,517 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-03-20 00:51:34,517 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-03-20 00:51:34,518 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-03-20 00:51:34,520 INFO L719 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 00:51:34,520 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 00:51:34,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:51:34 BoogieIcfgContainer [2022-03-20 00:51:34,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 00:51:34,532 INFO L158 Benchmark]: Toolchain (without parser) took 489978.07ms. Allocated memory was 181.4MB in the beginning and 625.0MB in the end (delta: 443.5MB). Free memory was 151.8MB in the beginning and 385.1MB in the end (delta: -233.3MB). Peak memory consumption was 381.3MB. Max. memory is 8.0GB. [2022-03-20 00:51:34,532 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 181.4MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 00:51:34,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 157.91ms. Allocated memory was 181.4MB in the beginning and 249.6MB in the end (delta: 68.2MB). Free memory was 151.6MB in the beginning and 220.1MB in the end (delta: -68.5MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-03-20 00:51:34,533 INFO L158 Benchmark]: Boogie Preprocessor took 30.36ms. Allocated memory is still 249.6MB. Free memory was 220.1MB in the beginning and 218.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 00:51:34,533 INFO L158 Benchmark]: RCFGBuilder took 306.49ms. Allocated memory is still 249.6MB. Free memory was 218.5MB in the beginning and 206.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 00:51:34,533 INFO L158 Benchmark]: TraceAbstraction took 489477.16ms. Allocated memory was 249.6MB in the beginning and 625.0MB in the end (delta: 375.4MB). Free memory was 205.9MB in the beginning and 385.1MB in the end (delta: -179.2MB). Peak memory consumption was 368.2MB. Max. memory is 8.0GB. [2022-03-20 00:51:34,534 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 181.4MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 157.91ms. Allocated memory was 181.4MB in the beginning and 249.6MB in the end (delta: 68.2MB). Free memory was 151.6MB in the beginning and 220.1MB in the end (delta: -68.5MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.36ms. Allocated memory is still 249.6MB. Free memory was 220.1MB in the beginning and 218.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 306.49ms. Allocated memory is still 249.6MB. Free memory was 218.5MB in the beginning and 206.5MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 489477.16ms. Allocated memory was 249.6MB in the beginning and 625.0MB in the end (delta: 375.4MB). Free memory was 205.9MB in the beginning and 385.1MB in the end (delta: -179.2MB). Peak memory consumption was 368.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 489.4s, OverallIterations: 18, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 49.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 410.7s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 1258 SdHoareTripleChecker+Valid, 27.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1194 mSDsluCounter, 5409 SdHoareTripleChecker+Invalid, 26.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 66 IncrementalHoareTripleChecker+Unchecked, 4490 mSDsCounter, 1743 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5309 IncrementalHoareTripleChecker+Invalid, 7121 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1743 mSolverCounterUnsat, 919 mSDtfsCounter, 5309 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1971 GetRequests, 1625 SyntacticMatches, 18 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2155 ImplicationChecksByTransitivity, 24.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=823occurred in iteration=17, InterpolantAutomatonStates: 252, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 18 MinimizatonAttempts, 498 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 565 PreInvPairs, 1178 NumberOfFragments, 1070 HoareAnnotationTreeSize, 565 FomulaSimplifications, 410407 FormulaSimplificationTreeSizeReduction, 40.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 765351 FormulaSimplificationTreeSizeReductionInter, 370.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 1063 NumberOfCodeBlocks, 1042 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1806 ConstructedInterpolants, 3 QuantifiedInterpolants, 9337 SizeOfPredicates, 100 NumberOfNonLiveVariables, 2865 ConjunctsInSsa, 472 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 2231/2489 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((((((b < a && v == d * b) && b == q * x + y * s) && 1 <= x) && a == y * r + p * x) && d * y * s + k * y * s + c + q * k * x + d * q * x == y * r + v + p * x) && y <= 100) && 1 <= y) || ((((((((((a == c + b * k && s == 1) && a == y * r + p * x) && d * y * s + k * y * s + c + q * k * x + d * q * x == y * r + v + p * x) && 1 <= a) && b == y) && y <= 100) && q == 0) && 1 <= y) && a == x) && p == 1) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((s == 1 && a == y * r + p * x) && 1 <= a) && b == y) && y <= 100) && q == 0) && 1 <= y) && a == x) && p == 1) || (((((((b < a && ((a == c + b * k || !(b * 3 <= c)) || b * 4 <= c)) && b == q * x + y * s) && 1 <= x) && a == y * r + p * x) && (y * r + p * x == k * y * s + c + q * k * x || b <= c)) && y <= 100) && 1 <= y) - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: (((((((((c == a && b == q * x + y * s) && 1 <= x) && k == 0) && a == y * r + p * x) && b < c) && y <= 100) && 1 <= y) || ((((((((((v == d * b && s == 1) && a == y * r + p * x) && d * y * s + k * y * s + c + q * k * x + d * q * x == y * r + v + p * x) && 1 <= a) && b == y) && y <= 100) && q == 0) && 1 <= y) && a == x) && p == 1)) || (((((((b < a && v == d * b) && 2 * (y * s) + q * x * 2 + k * y * s + c + q * k * x == y * r + p * x + b * 2) && b == q * x + y * s) && 1 <= x) && a == y * r + p * x) && y <= 100) && 1 <= y)) || ((((((((((k == 0 && s == 1) && a == y * r + p * x) && 1 <= a) && b == y) && y <= 100) && q == 0) && 1 <= y) && a == x) && c == x) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-03-20 00:51:34,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...