/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/array-fpi/ss3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 11:59:34,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 11:59:34,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 11:59:35,057 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 11:59:35,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 11:59:35,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 11:59:35,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 11:59:35,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 11:59:35,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 11:59:35,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 11:59:35,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 11:59:35,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 11:59:35,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 11:59:35,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 11:59:35,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 11:59:35,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 11:59:35,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 11:59:35,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 11:59:35,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 11:59:35,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 11:59:35,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 11:59:35,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 11:59:35,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 11:59:35,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 11:59:35,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 11:59:35,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 11:59:35,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 11:59:35,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 11:59:35,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 11:59:35,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 11:59:35,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 11:59:35,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 11:59:35,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 11:59:35,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 11:59:35,106 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 11:59:35,106 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 11:59:35,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 11:59:35,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 11:59:35,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 11:59:35,108 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 11:59:35,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 11:59:35,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 11:59:35,128 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 11:59:35,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 11:59:35,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 11:59:35,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 11:59:35,131 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 11:59:35,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 11:59:35,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 11:59:35,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 11:59:35,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 11:59:35,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 11:59:35,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:59:35,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 11:59:35,132 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 11:59:35,132 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 11:59:35,132 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 11:59:35,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 11:59:35,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 11:59:35,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 11:59:35,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 11:59:35,354 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 11:59:35,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss3.c [2022-01-31 11:59:35,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff3017b0/49976e1a3f7f46dea80f3a6682734df2/FLAG1af77ff21 [2022-01-31 11:59:35,774 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 11:59:35,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3.c [2022-01-31 11:59:35,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff3017b0/49976e1a3f7f46dea80f3a6682734df2/FLAG1af77ff21 [2022-01-31 11:59:36,205 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff3017b0/49976e1a3f7f46dea80f3a6682734df2 [2022-01-31 11:59:36,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 11:59:36,209 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 11:59:36,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 11:59:36,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 11:59:36,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 11:59:36,214 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a2657e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36, skipping insertion in model container [2022-01-31 11:59:36,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 11:59:36,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 11:59:36,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3.c[586,599] [2022-01-31 11:59:36,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:59:36,409 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 11:59:36,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ss3.c[586,599] [2022-01-31 11:59:36,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 11:59:36,465 INFO L208 MainTranslator]: Completed translation [2022-01-31 11:59:36,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36 WrapperNode [2022-01-31 11:59:36,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 11:59:36,467 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 11:59:36,467 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 11:59:36,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 11:59:36,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,509 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 11:59:36,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 11:59:36,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 11:59:36,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 11:59:36,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 11:59:36,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:36,548 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 11:59:36,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 11:59:36,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 11:59:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 11:59:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 11:59:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 11:59:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 11:59:36,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 11:59:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 11:59:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 11:59:36,585 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 11:59:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 11:59:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 11:59:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 11:59:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 11:59:36,586 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2022-01-31 11:59:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 11:59:36,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 11:59:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-31 11:59:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 11:59:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 11:59:36,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 11:59:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 11:59:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 11:59:36,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 11:59:36,665 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 11:59:36,666 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 11:59:36,875 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 11:59:36,880 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 11:59:36,880 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-31 11:59:36,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:59:36 BoogieIcfgContainer [2022-01-31 11:59:36,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 11:59:36,882 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 11:59:36,882 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 11:59:36,896 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 11:59:36,909 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:59:36" (1/1) ... [2022-01-31 11:59:36,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:59:36 BasicIcfg [2022-01-31 11:59:36,925 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 11:59:36,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 11:59:36,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 11:59:36,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 11:59:36,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 11:59:36" (1/4) ... [2022-01-31 11:59:36,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ca734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:59:36, skipping insertion in model container [2022-01-31 11:59:36,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 11:59:36" (2/4) ... [2022-01-31 11:59:36,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ca734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 11:59:36, skipping insertion in model container [2022-01-31 11:59:36,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 11:59:36" (3/4) ... [2022-01-31 11:59:36,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292ca734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 11:59:36, skipping insertion in model container [2022-01-31 11:59:36,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 11:59:36" (4/4) ... [2022-01-31 11:59:36,931 INFO L111 eAbstractionObserver]: Analyzing ICFG ss3.cJordan [2022-01-31 11:59:36,935 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 11:59:36,935 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 11:59:36,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 11:59:36,973 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 11:59:36,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 11:59:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 11:59:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 11:59:36,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:36,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:36,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash -592555077, now seen corresponding path program 1 times [2022-01-31 11:59:37,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:37,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496801859] [2022-01-31 11:59:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:37,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:37,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 11:59:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-01-31 11:59:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:59:37,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:37,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496801859] [2022-01-31 11:59:37,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496801859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:59:37,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:59:37,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 11:59:37,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792594775] [2022-01-31 11:59:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:59:37,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 11:59:37,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:37,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 11:59:37,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:59:37,287 INFO L87 Difference]: Start difference. First operand has 40 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:37,366 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-01-31 11:59:37,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 11:59:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-01-31 11:59:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:37,377 INFO L225 Difference]: With dead ends: 40 [2022-01-31 11:59:37,378 INFO L226 Difference]: Without dead ends: 33 [2022-01-31 11:59:37,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 11:59:37,387 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:37,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 49 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:59:37,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-01-31 11:59:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-01-31 11:59:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:37,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-01-31 11:59:37,421 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 27 [2022-01-31 11:59:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:37,422 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-01-31 11:59:37,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:37,423 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-01-31 11:59:37,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-31 11:59:37,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:37,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:37,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 11:59:37,424 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:37,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:37,426 INFO L85 PathProgramCache]: Analyzing trace with hash -391177355, now seen corresponding path program 1 times [2022-01-31 11:59:37,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:37,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035176772] [2022-01-31 11:59:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:37,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:37,468 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:37,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [249841251] [2022-01-31 11:59:37,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:37,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:37,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:37,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:59:37,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 11:59:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:37,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 11:59:37,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:59:37,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 11:59:37,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:37,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035176772] [2022-01-31 11:59:37,648 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:37,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249841251] [2022-01-31 11:59:37,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249841251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 11:59:37,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 11:59:37,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 11:59:37,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706796625] [2022-01-31 11:59:37,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 11:59:37,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 11:59:37,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:37,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 11:59:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 11:59:37,651 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:37,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:37,700 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-01-31 11:59:37,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 11:59:37,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-01-31 11:59:37,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:37,702 INFO L225 Difference]: With dead ends: 43 [2022-01-31 11:59:37,702 INFO L226 Difference]: Without dead ends: 43 [2022-01-31 11:59:37,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 11:59:37,703 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 26 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:37,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 36 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 11:59:37,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-01-31 11:59:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-01-31 11:59:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-01-31 11:59:37,709 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2022-01-31 11:59:37,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:37,710 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-01-31 11:59:37,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-01-31 11:59:37,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-31 11:59:37,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:37,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:37,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:37,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:37,930 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1735623935, now seen corresponding path program 1 times [2022-01-31 11:59:37,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:37,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824856162] [2022-01-31 11:59:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:37,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:37,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:37,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941800872] [2022-01-31 11:59:37,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:37,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:37,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:59:37,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 11:59:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 11:59:38,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-31 11:59:38,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:38,148 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:59:38,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 11:59:38,193 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 11:59:38,324 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-01-31 11:59:38,446 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2022-01-31 11:59:38,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2022-01-31 11:59:38,665 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 23 [2022-01-31 11:59:38,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-01-31 11:59:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:59:38,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:39,557 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:59:39,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:39,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824856162] [2022-01-31 11:59:39,642 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:39,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941800872] [2022-01-31 11:59:39,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941800872] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:59:39,643 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:59:39,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 30 [2022-01-31 11:59:39,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580450805] [2022-01-31 11:59:39,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:59:39,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-31 11:59:39,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-31 11:59:39,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-01-31 11:59:39,646 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 30 states, 28 states have (on average 2.0) internal successors, (56), 29 states have internal predecessors, (56), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:59:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:42,489 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2022-01-31 11:59:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-31 11:59:42,490 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 2.0) internal successors, (56), 29 states have internal predecessors, (56), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 37 [2022-01-31 11:59:42,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:42,491 INFO L225 Difference]: With dead ends: 76 [2022-01-31 11:59:42,492 INFO L226 Difference]: Without dead ends: 72 [2022-01-31 11:59:42,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 519 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=341, Invalid=1821, Unknown=0, NotChecked=0, Total=2162 [2022-01-31 11:59:42,494 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 49 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:42,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 231 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 583 Invalid, 0 Unknown, 4 Unchecked, 1.1s Time] [2022-01-31 11:59:42,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-01-31 11:59:42,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 56. [2022-01-31 11:59:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 49 states have (on average 1.183673469387755) internal successors, (58), 49 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:42,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-01-31 11:59:42,500 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 37 [2022-01-31 11:59:42,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:42,500 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-01-31 11:59:42,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 2.0) internal successors, (56), 29 states have internal predecessors, (56), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 11:59:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-01-31 11:59:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 11:59:42,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:42,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:42,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:42,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-31 11:59:42,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:42,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:42,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1756768709, now seen corresponding path program 2 times [2022-01-31 11:59:42,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:42,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843066099] [2022-01-31 11:59:42,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:42,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:42,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:42,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1856674789] [2022-01-31 11:59:42,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 11:59:42,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:42,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:42,773 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:59:42,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 11:59:42,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 11:59:42,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:59:42,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:59:42,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 11:59:42,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 11:59:43,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:43,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843066099] [2022-01-31 11:59:43,019 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:43,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856674789] [2022-01-31 11:59:43,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856674789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:59:43,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:59:43,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 11:59:43,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116372162] [2022-01-31 11:59:43,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:59:43,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 11:59:43,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:43,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 11:59:43,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 11:59:43,021 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:43,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:43,210 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2022-01-31 11:59:43,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-31 11:59:43,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-01-31 11:59:43,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:43,217 INFO L225 Difference]: With dead ends: 77 [2022-01-31 11:59:43,217 INFO L226 Difference]: Without dead ends: 77 [2022-01-31 11:59:43,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-01-31 11:59:43,219 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:43,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 110 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:59:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-01-31 11:59:43,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 65. [2022-01-31 11:59:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 58 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-01-31 11:59:43,233 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 39 [2022-01-31 11:59:43,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:43,234 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-01-31 11:59:43,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:43,234 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-01-31 11:59:43,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-31 11:59:43,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:43,235 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 11:59:43,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:43,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:43,436 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:43,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1024725411, now seen corresponding path program 3 times [2022-01-31 11:59:43,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:43,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560562132] [2022-01-31 11:59:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:43,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:43,459 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:43,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481651523] [2022-01-31 11:59:43,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 11:59:43,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:43,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:43,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:59:43,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-31 11:59:43,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 11:59:43,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:59:43,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-31 11:59:43,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 11:59:43,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 11:59:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 11:59:43,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 11:59:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560562132] [2022-01-31 11:59:43,716 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 11:59:43,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481651523] [2022-01-31 11:59:43,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481651523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 11:59:43,716 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 11:59:43,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-01-31 11:59:43,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449463228] [2022-01-31 11:59:43,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 11:59:43,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 11:59:43,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 11:59:43,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 11:59:43,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 11:59:43,718 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 11:59:43,831 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2022-01-31 11:59:43,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 11:59:43,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-01-31 11:59:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 11:59:43,832 INFO L225 Difference]: With dead ends: 69 [2022-01-31 11:59:43,832 INFO L226 Difference]: Without dead ends: 53 [2022-01-31 11:59:43,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-31 11:59:43,833 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 38 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 11:59:43,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 92 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 11:59:43,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-01-31 11:59:43,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2022-01-31 11:59:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 11:59:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2022-01-31 11:59:43,838 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 39 [2022-01-31 11:59:43,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 11:59:43,838 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2022-01-31 11:59:43,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 11:59:43,838 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2022-01-31 11:59:43,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-31 11:59:43,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 11:59:43,839 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2022-01-31 11:59:43,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-31 11:59:44,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:44,043 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 11:59:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 11:59:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1388693107, now seen corresponding path program 4 times [2022-01-31 11:59:44,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 11:59:44,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673484478] [2022-01-31 11:59:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 11:59:44,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 11:59:44,069 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 11:59:44,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094009284] [2022-01-31 11:59:44,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 11:59:44,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 11:59:44,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 11:59:44,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 11:59:44,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-31 11:59:44,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 11:59:44,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 11:59:44,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 76 conjunts are in the unsatisfiable core [2022-01-31 11:59:44,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 11:59:44,182 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 11:59:44,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 11:59:44,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-01-31 11:59:44,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,421 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:44,422 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-01-31 11:59:44,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,520 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2022-01-31 11:59:44,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,692 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:44,692 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 45 [2022-01-31 11:59:44,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2022-01-31 11:59:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:44,945 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:44,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2022-01-31 11:59:45,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:45,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:45,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-01-31 11:59:45,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:45,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:45,250 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 11:59:45,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 41 [2022-01-31 11:59:45,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:45,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 43 [2022-01-31 11:59:45,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 11:59:45,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2022-01-31 11:59:45,620 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 11:59:45,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:00:12,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:00:12,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:00:12,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673484478] [2022-01-31 12:00:12,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:00:12,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094009284] [2022-01-31 12:00:12,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094009284] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:00:12,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:00:12,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 50 [2022-01-31 12:00:12,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4711520] [2022-01-31 12:00:12,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:00:12,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 12:00:12,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:00:12,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 12:00:12,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2248, Unknown=2, NotChecked=0, Total=2450 [2022-01-31 12:00:12,635 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 50 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:00:40,401 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:00:43,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:00:45,609 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:00:47,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:00:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:00:53,595 INFO L93 Difference]: Finished difference Result 89 states and 99 transitions. [2022-01-31 12:00:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-31 12:00:53,596 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2022-01-31 12:00:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:00:53,598 INFO L225 Difference]: With dead ends: 89 [2022-01-31 12:00:53,598 INFO L226 Difference]: Without dead ends: 85 [2022-01-31 12:00:53,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=349, Invalid=3939, Unknown=2, NotChecked=0, Total=4290 [2022-01-31 12:00:53,601 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-01-31 12:00:53,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 413 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1114 Invalid, 1 Unknown, 198 Unchecked, 18.8s Time] [2022-01-31 12:00:53,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-01-31 12:00:53,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2022-01-31 12:00:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 64 states have (on average 1.140625) internal successors, (73), 64 states have internal predecessors, (73), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:00:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2022-01-31 12:00:53,608 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 47 [2022-01-31 12:00:53,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:00:53,608 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2022-01-31 12:00:53,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:00:53,609 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2022-01-31 12:00:53,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 12:00:53,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:00:53,610 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-01-31 12:00:53,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-31 12:00:53,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:00:53,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:00:53,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:00:53,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1900330159, now seen corresponding path program 5 times [2022-01-31 12:00:53,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:00:53,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180249965] [2022-01-31 12:00:53,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:00:53,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:00:53,854 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:00:53,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623012882] [2022-01-31 12:00:53,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 12:00:53,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:00:53,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:00:53,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:00:53,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-31 12:00:54,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-31 12:00:54,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:00:54,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 12:00:54,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:00:54,136 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 12:00:54,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:00:54,245 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 12:00:54,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:00:54,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180249965] [2022-01-31 12:00:54,246 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:00:54,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623012882] [2022-01-31 12:00:54,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623012882] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:00:54,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:00:54,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 12:00:54,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394675233] [2022-01-31 12:00:54,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:00:54,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 12:00:54,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:00:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 12:00:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 12:00:54,248 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:00:54,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:00:54,498 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2022-01-31 12:00:54,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 12:00:54,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-01-31 12:00:54,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:00:54,500 INFO L225 Difference]: With dead ends: 97 [2022-01-31 12:00:54,500 INFO L226 Difference]: Without dead ends: 97 [2022-01-31 12:00:54,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-31 12:00:54,501 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 57 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 12:00:54,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 110 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 12:00:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-31 12:00:54,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2022-01-31 12:00:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 74 states have (on average 1.135135135135135) internal successors, (84), 74 states have internal predecessors, (84), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:00:54,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2022-01-31 12:00:54,507 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 49 [2022-01-31 12:00:54,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:00:54,507 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2022-01-31 12:00:54,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:00:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2022-01-31 12:00:54,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-31 12:00:54,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:00:54,509 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1] [2022-01-31 12:00:54,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-31 12:00:54,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:00:54,733 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:00:54,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:00:54,734 INFO L85 PathProgramCache]: Analyzing trace with hash -582197969, now seen corresponding path program 6 times [2022-01-31 12:00:54,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:00:54,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206318026] [2022-01-31 12:00:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:00:54,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:00:54,760 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:00:54,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [35080080] [2022-01-31 12:00:54,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-31 12:00:54,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:00:54,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:00:54,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:00:54,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-31 12:00:54,848 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-31 12:00:54,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:00:54,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-31 12:00:54,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:00:54,957 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 12:00:54,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:00:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-31 12:00:55,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:00:55,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206318026] [2022-01-31 12:00:55,058 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:00:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35080080] [2022-01-31 12:00:55,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35080080] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:00:55,059 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:00:55,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2022-01-31 12:00:55,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329846115] [2022-01-31 12:00:55,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:00:55,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 12:00:55,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:00:55,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 12:00:55,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-31 12:00:55,060 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:00:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:00:55,227 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2022-01-31 12:00:55,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 12:00:55,227 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 49 [2022-01-31 12:00:55,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:00:55,228 INFO L225 Difference]: With dead ends: 87 [2022-01-31 12:00:55,228 INFO L226 Difference]: Without dead ends: 63 [2022-01-31 12:00:55,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-31 12:00:55,229 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 74 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 12:00:55,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 86 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 12:00:55,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-01-31 12:00:55,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2022-01-31 12:00:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:00:55,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2022-01-31 12:00:55,234 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 49 [2022-01-31 12:00:55,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:00:55,234 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2022-01-31 12:00:55,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:00:55,234 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2022-01-31 12:00:55,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-31 12:00:55,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:00:55,236 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:00:55,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-31 12:00:55,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:00:55,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:00:55,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:00:55,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1090808039, now seen corresponding path program 7 times [2022-01-31 12:00:55,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:00:55,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596186360] [2022-01-31 12:00:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:00:55,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:00:55,483 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:00:55,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952076908] [2022-01-31 12:00:55,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-31 12:00:55,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:00:55,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:00:55,494 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:00:55,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-31 12:00:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:00:55,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 108 conjunts are in the unsatisfiable core [2022-01-31 12:00:55,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:00:55,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 12:00:55,630 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-31 12:00:55,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 12:00:55,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-01-31 12:00:55,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-01-31 12:00:55,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,906 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:55,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:55,908 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 51 [2022-01-31 12:00:56,023 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:56,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 58 [2022-01-31 12:00:56,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,143 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 52 [2022-01-31 12:00:56,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,283 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:56,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2022-01-31 12:00:56,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:56,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 54 [2022-01-31 12:00:56,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-01-31 12:00:56,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,717 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:56,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2022-01-31 12:00:56,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:56,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,850 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 56 [2022-01-31 12:00:56,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:56,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 53 [2022-01-31 12:00:57,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:57,169 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:57,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:57,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:57,171 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 61 [2022-01-31 12:00:57,297 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:00:57,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:57,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:57,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:00:57,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 56 [2022-01-31 12:00:57,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2022-01-31 12:00:57,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2022-01-31 12:00:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:00:57,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:05:13,897 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:05:13,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:05:13,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596186360] [2022-01-31 12:05:13,899 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:05:13,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952076908] [2022-01-31 12:05:13,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952076908] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:05:13,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:05:13,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 70 [2022-01-31 12:05:13,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299320760] [2022-01-31 12:05:13,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:05:13,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-01-31 12:05:13,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:05:13,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-01-31 12:05:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=4505, Unknown=23, NotChecked=0, Total=4830 [2022-01-31 12:05:13,902 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 70 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 69 states have internal predecessors, (92), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:08:02,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:05,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:08,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:12,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:16,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:20,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:49,589 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:51,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:08:53,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:05,452 WARN L228 SmtUtils]: Spent 11.63s on a formula simplification that was a NOOP. DAG size: 200 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 12:10:07,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:09,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:10,605 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:11,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:15,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:17,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:18,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:20,184 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:22,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:24,275 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:26,327 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:27,487 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:29,539 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:32,557 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:34,012 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:35,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:37,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:38,483 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:40,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:42,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:44,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:45,998 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:47,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:49,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:50,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:51,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:53,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:10:56,428 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:11:46,491 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:11:52,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:11:54,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:11:56,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:11:57,862 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:12:01,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:12:05,128 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:12:19,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:05,786 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:09,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:13,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:15,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:16,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:18,917 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:21,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:23,980 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:27,226 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:28,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:37,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:40,533 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:41,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:44,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:49,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:51,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:55,074 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-01-31 12:13:55,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:13:55,124 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-01-31 12:13:55,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-31 12:13:55,124 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 69 states have internal predecessors, (92), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2022-01-31 12:13:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:13:55,125 INFO L225 Difference]: With dead ends: 111 [2022-01-31 12:13:55,125 INFO L226 Difference]: Without dead ends: 107 [2022-01-31 12:13:55,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 577.5s TimeCoverageRelationStatistics Valid=493, Invalid=7289, Unknown=50, NotChecked=0, Total=7832 [2022-01-31 12:13:55,127 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 2068 mSolverCounterSat, 136 mSolverCounterUnsat, 21 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 182.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2068 IncrementalHoareTripleChecker+Invalid, 21 IncrementalHoareTripleChecker+Unknown, 376 IncrementalHoareTripleChecker+Unchecked, 197.4s IncrementalHoareTripleChecker+Time [2022-01-31 12:13:55,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 567 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2068 Invalid, 21 Unknown, 376 Unchecked, 197.4s Time] [2022-01-31 12:13:55,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-31 12:13:55,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2022-01-31 12:13:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.1125) internal successors, (89), 80 states have internal predecessors, (89), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:13:55,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2022-01-31 12:13:55,133 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 57 [2022-01-31 12:13:55,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:13:55,134 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2022-01-31 12:13:55,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 68 states have (on average 1.3529411764705883) internal successors, (92), 69 states have internal predecessors, (92), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:13:55,134 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2022-01-31 12:13:55,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 12:13:55,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:13:55,135 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:13:55,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-31 12:13:55,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-01-31 12:13:55,348 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:13:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:13:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2090744797, now seen corresponding path program 8 times [2022-01-31 12:13:55,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:13:55,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496836032] [2022-01-31 12:13:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:13:55,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:13:55,370 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:13:55,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081973890] [2022-01-31 12:13:55,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 12:13:55,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:13:55,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:13:55,372 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:13:55,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-31 12:13:55,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 12:13:55,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:13:55,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:13:55,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:13:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 12:13:55,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:13:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 12:13:55,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:13:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496836032] [2022-01-31 12:13:55,782 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:13:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081973890] [2022-01-31 12:13:55,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081973890] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:13:55,782 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:13:55,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-31 12:13:55,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142297798] [2022-01-31 12:13:55,783 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:13:55,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 12:13:55,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:13:55,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 12:13:55,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 12:13:55,784 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:13:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:13:56,358 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2022-01-31 12:13:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-31 12:13:56,359 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2022-01-31 12:13:56,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:13:56,360 INFO L225 Difference]: With dead ends: 119 [2022-01-31 12:13:56,360 INFO L226 Difference]: Without dead ends: 119 [2022-01-31 12:13:56,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2022-01-31 12:13:56,361 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 65 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 12:13:56,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 84 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 12:13:56,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-01-31 12:13:56,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2022-01-31 12:13:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 92 states have (on average 1.108695652173913) internal successors, (102), 92 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:13:56,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2022-01-31 12:13:56,366 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 59 [2022-01-31 12:13:56,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:13:56,366 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2022-01-31 12:13:56,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:13:56,367 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2022-01-31 12:13:56,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-31 12:13:56,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:13:56,368 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:13:56,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-31 12:13:56,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-31 12:13:56,579 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:13:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:13:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2077456453, now seen corresponding path program 9 times [2022-01-31 12:13:56,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:13:56,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674578144] [2022-01-31 12:13:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:13:56,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:13:56,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:13:56,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581732337] [2022-01-31 12:13:56,601 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 12:13:56,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:13:56,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:13:56,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:13:56,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-31 12:13:56,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-31 12:13:56,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:13:56,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:13:56,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:13:56,978 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 12:13:56,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:13:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-31 12:13:57,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:13:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674578144] [2022-01-31 12:13:57,136 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 12:13:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581732337] [2022-01-31 12:13:57,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581732337] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:13:57,136 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 12:13:57,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-01-31 12:13:57,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831012677] [2022-01-31 12:13:57,137 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 12:13:57,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 12:13:57,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:13:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 12:13:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-01-31 12:13:57,138 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:13:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:13:57,505 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2022-01-31 12:13:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 12:13:57,506 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 59 [2022-01-31 12:13:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:13:57,506 INFO L225 Difference]: With dead ends: 105 [2022-01-31 12:13:57,506 INFO L226 Difference]: Without dead ends: 73 [2022-01-31 12:13:57,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2022-01-31 12:13:57,507 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 111 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 12:13:57,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 76 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 12:13:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-01-31 12:13:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2022-01-31 12:13:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.0819672131147542) internal successors, (66), 61 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 12:13:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2022-01-31 12:13:57,517 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 59 [2022-01-31 12:13:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:13:57,517 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2022-01-31 12:13:57,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 15 states have internal predecessors, (49), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-01-31 12:13:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2022-01-31 12:13:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-31 12:13:57,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:13:57,518 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2022-01-31 12:13:57,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-31 12:13:57,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 12:13:57,724 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:13:57,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:13:57,724 INFO L85 PathProgramCache]: Analyzing trace with hash 906220453, now seen corresponding path program 10 times [2022-01-31 12:13:57,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:13:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805664727] [2022-01-31 12:13:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:13:57,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:13:57,753 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 12:13:57,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [188044731] [2022-01-31 12:13:57,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 12:13:57,754 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:13:57,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:13:57,755 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:13:57,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-31 12:13:57,862 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 12:13:57,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:13:57,866 WARN L261 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 137 conjunts are in the unsatisfiable core [2022-01-31 12:13:57,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:13:57,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-31 12:13:57,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:57,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-01-31 12:13:58,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 37 [2022-01-31 12:13:58,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,145 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 52 [2022-01-31 12:13:58,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,272 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2022-01-31 12:13:58,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:58,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,464 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-01-31 12:13:58,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:58,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,614 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 61 [2022-01-31 12:13:58,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,792 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:58,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 65 [2022-01-31 12:13:58,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,969 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:58,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:58,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2022-01-31 12:13:59,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,330 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:59,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,334 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 63 [2022-01-31 12:13:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,525 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2022-01-31 12:13:59,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:13:59,748 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:13:59,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 59 [2022-01-31 12:14:00,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 57 [2022-01-31 12:14:00,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,365 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:14:00,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,369 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 63 [2022-01-31 12:14:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:14:00,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 61 [2022-01-31 12:14:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:00,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:14:00,804 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 68 [2022-01-31 12:14:01,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 59 [2022-01-31 12:14:01,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,340 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:14:01,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2022-01-31 12:14:01,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:14:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,675 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 65 [2022-01-31 12:14:01,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:01,991 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-31 12:14:01,993 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 65 [2022-01-31 12:14:02,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:02,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 57 [2022-01-31 12:14:02,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-31 12:14:02,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 23 [2022-01-31 12:14:02,654 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:14:02,655 INFO L328 TraceCheckSpWp]: Computing backward predicates...