/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-programs/partial_mod_count_limited_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 09:21:38,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 09:21:38,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 09:21:38,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 09:21:38,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 09:21:38,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 09:21:38,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 09:21:38,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 09:21:38,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 09:21:38,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 09:21:38,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 09:21:38,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 09:21:38,127 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 09:21:38,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 09:21:38,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 09:21:38,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 09:21:38,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 09:21:38,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 09:21:38,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 09:21:38,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 09:21:38,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 09:21:38,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 09:21:38,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 09:21:38,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 09:21:38,147 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 09:21:38,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 09:21:38,148 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 09:21:38,149 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 09:21:38,149 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 09:21:38,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 09:21:38,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 09:21:38,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 09:21:38,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 09:21:38,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 09:21:38,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 09:21:38,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 09:21:38,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 09:21:38,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 09:21:38,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 09:21:38,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 09:21:38,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 09:21:38,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 09:21:38,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 09:21:38,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 09:21:38,166 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 09:21:38,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 09:21:38,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 09:21:38,167 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 09:21:38,167 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 09:21:38,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 09:21:38,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 09:21:38,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 09:21:38,168 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 09:21:38,168 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 09:21:38,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 09:21:38,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 09:21:38,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 09:21:38,169 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 09:21:38,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 09:21:38,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 09:21:38,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 09:21:38,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 09:21:38,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 09:21:38,394 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 09:21:38,395 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-programs/partial_mod_count_limited_2.c [2022-01-31 09:21:38,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f2e172/d388471489524cad8dbb9c038c6ee461/FLAG7b188dc2f [2022-01-31 09:21:38,774 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 09:21:38,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-programs/partial_mod_count_limited_2.c [2022-01-31 09:21:38,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f2e172/d388471489524cad8dbb9c038c6ee461/FLAG7b188dc2f [2022-01-31 09:21:39,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf1f2e172/d388471489524cad8dbb9c038c6ee461 [2022-01-31 09:21:39,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 09:21:39,199 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 09:21:39,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 09:21:39,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 09:21:39,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 09:21:39,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b486d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39, skipping insertion in model container [2022-01-31 09:21:39,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 09:21:39,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 09:21:39,317 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-programs/partial_mod_count_limited_2.c[331,344] [2022-01-31 09:21:39,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 09:21:39,343 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 09:21:39,351 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-programs/partial_mod_count_limited_2.c[331,344] [2022-01-31 09:21:39,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 09:21:39,365 INFO L208 MainTranslator]: Completed translation [2022-01-31 09:21:39,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39 WrapperNode [2022-01-31 09:21:39,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 09:21:39,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 09:21:39,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 09:21:39,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 09:21:39,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,393 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,394 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 09:21:39,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 09:21:39,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 09:21:39,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 09:21:39,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 09:21:39,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:39,423 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 09:21:39,425 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 09:21:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 09:21:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 09:21:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 09:21:39,460 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 09:21:39,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 09:21:39,461 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 09:21:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-31 09:21:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 09:21:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 09:21:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 09:21:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 09:21:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 09:21:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 09:21:39,517 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 09:21:39,518 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 09:21:39,698 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 09:21:39,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 09:21:39,718 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-31 09:21:39,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:21:39 BoogieIcfgContainer [2022-01-31 09:21:39,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 09:21:39,720 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 09:21:39,721 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 09:21:39,722 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 09:21:39,724 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:21:39" (1/1) ... [2022-01-31 09:21:39,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:21:39 BasicIcfg [2022-01-31 09:21:39,737 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 09:21:39,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 09:21:39,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 09:21:39,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 09:21:39,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 09:21:39" (1/4) ... [2022-01-31 09:21:39,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c543faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:21:39, skipping insertion in model container [2022-01-31 09:21:39,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 09:21:39" (2/4) ... [2022-01-31 09:21:39,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c543faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 09:21:39, skipping insertion in model container [2022-01-31 09:21:39,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 09:21:39" (3/4) ... [2022-01-31 09:21:39,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c543faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 09:21:39, skipping insertion in model container [2022-01-31 09:21:39,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 09:21:39" (4/4) ... [2022-01-31 09:21:39,758 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_2.cJordan [2022-01-31 09:21:39,762 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 09:21:39,762 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 09:21:39,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 09:21:39,795 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 09:21:39,795 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 09:21:39,820 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 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 09:21:39,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 09:21:39,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:39,826 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] [2022-01-31 09:21:39,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:39,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:39,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1836216133, now seen corresponding path program 1 times [2022-01-31 09:21:39,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:39,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124651398] [2022-01-31 09:21:39,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:39,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:39,962 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:39,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322232022] [2022-01-31 09:21:39,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:39,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:39,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:39,966 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 09:21:39,968 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 09:21:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:21:40,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-31 09:21:40,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:40,114 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 09:21:40,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 09:21:40,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:40,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124651398] [2022-01-31 09:21:40,116 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:40,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322232022] [2022-01-31 09:21:40,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322232022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 09:21:40,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 09:21:40,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-31 09:21:40,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467935284] [2022-01-31 09:21:40,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 09:21:40,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-31 09:21:40,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:40,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-31 09:21:40,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-31 09:21:40,152 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.434782608695652) internal successors, (33), 24 states have internal predecessors, (33), 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 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 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 09:21:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:40,164 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-01-31 09:21:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-31 09:21:40,166 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 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 20 [2022-01-31 09:21:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:40,171 INFO L225 Difference]: With dead ends: 33 [2022-01-31 09:21:40,171 INFO L226 Difference]: Without dead ends: 28 [2022-01-31 09:21:40,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-31 09:21:40,175 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:40,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 09:21:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-01-31 09:21:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-01-31 09:21:40,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 09:21:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-01-31 09:21:40,198 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2022-01-31 09:21:40,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:40,198 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-01-31 09:21:40,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (4), 2 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 09:21:40,199 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-01-31 09:21:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-31 09:21:40,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:40,199 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] [2022-01-31 09:21:40,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 09:21:40,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-01-31 09:21:40,412 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:40,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:40,413 INFO L85 PathProgramCache]: Analyzing trace with hash 35676921, now seen corresponding path program 1 times [2022-01-31 09:21:40,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:40,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761837264] [2022-01-31 09:21:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:40,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:40,424 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:40,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783606139] [2022-01-31 09:21:40,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:40,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:40,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:40,426 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 09:21:40,427 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 09:21:40,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:21:40,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-31 09:21:40,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:40,577 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 09:21:40,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 09:21:40,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:40,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761837264] [2022-01-31 09:21:40,578 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:40,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783606139] [2022-01-31 09:21:40,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783606139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 09:21:40,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 09:21:40,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-31 09:21:40,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864812186] [2022-01-31 09:21:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 09:21:40,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-31 09:21:40,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:40,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-31 09:21:40,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-31 09:21:40,580 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 09:21:40,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:40,638 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-01-31 09:21:40,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-31 09:21:40,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-01-31 09:21:40,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:40,642 INFO L225 Difference]: With dead ends: 37 [2022-01-31 09:21:40,642 INFO L226 Difference]: Without dead ends: 37 [2022-01-31 09:21:40,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 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 09:21:40,644 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 28 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:40,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 38 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 09:21:40,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-01-31 09:21:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2022-01-31 09:21:40,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 09:21:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-01-31 09:21:40,649 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2022-01-31 09:21:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:40,650 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-01-31 09:21:40,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 09:21:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-01-31 09:21:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-31 09:21:40,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:40,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:21:40,667 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 09:21:40,859 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,SelfDestructingSolverStorable1 [2022-01-31 09:21:40,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:40,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash -168804664, now seen corresponding path program 1 times [2022-01-31 09:21:40,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:40,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703258492] [2022-01-31 09:21:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:40,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:40,881 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:40,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1655744415] [2022-01-31 09:21:40,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:40,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:40,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:40,883 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 09:21:40,884 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 09:21:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:21:40,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-31 09:21:40,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:41,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 09:21:41,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:21:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 09:21:41,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:41,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703258492] [2022-01-31 09:21:41,126 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:41,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655744415] [2022-01-31 09:21:41,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655744415] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:21:41,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:21:41,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-01-31 09:21:41,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356469577] [2022-01-31 09:21:41,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:21:41,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-31 09:21:41,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:41,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-31 09:21:41,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-31 09:21:41,128 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 09:21:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:41,248 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-01-31 09:21:41,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 09:21:41,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2022-01-31 09:21:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:41,249 INFO L225 Difference]: With dead ends: 57 [2022-01-31 09:21:41,249 INFO L226 Difference]: Without dead ends: 57 [2022-01-31 09:21:41,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-01-31 09:21:41,250 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 91 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:41,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 66 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 09:21:41,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-01-31 09:21:41,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 44. [2022-01-31 09:21:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 09:21:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2022-01-31 09:21:41,255 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 25 [2022-01-31 09:21:41,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:41,255 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2022-01-31 09:21:41,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 09:21:41,256 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2022-01-31 09:21:41,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-31 09:21:41,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:41,256 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:21:41,277 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 09:21:41,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:41,476 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:41,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:41,476 INFO L85 PathProgramCache]: Analyzing trace with hash -760694183, now seen corresponding path program 1 times [2022-01-31 09:21:41,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085023241] [2022-01-31 09:21:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:41,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:41,489 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:41,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597175135] [2022-01-31 09:21:41,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:41,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:41,496 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 09:21:41,497 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 09:21:41,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:21:41,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-31 09:21:41,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:41,732 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 09:21:41,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:21:41,856 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 09:21:41,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085023241] [2022-01-31 09:21:41,856 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:41,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597175135] [2022-01-31 09:21:41,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597175135] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:21:41,856 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:21:41,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-01-31 09:21:41,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650532168] [2022-01-31 09:21:41,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:21:41,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 09:21:41,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:41,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 09:21:41,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-01-31 09:21:41,858 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 09:21:42,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:42,104 INFO L93 Difference]: Finished difference Result 111 states and 146 transitions. [2022-01-31 09:21:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 09:21:42,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2022-01-31 09:21:42,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:42,108 INFO L225 Difference]: With dead ends: 111 [2022-01-31 09:21:42,108 INFO L226 Difference]: Without dead ends: 111 [2022-01-31 09:21:42,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-01-31 09:21:42,109 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 231 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:42,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 100 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 09:21:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-01-31 09:21:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 74. [2022-01-31 09:21:42,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 66 states have (on average 1.2727272727272727) internal successors, (84), 66 states have internal predecessors, (84), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 09:21:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 91 transitions. [2022-01-31 09:21:42,118 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 91 transitions. Word has length 40 [2022-01-31 09:21:42,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:42,119 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 91 transitions. [2022-01-31 09:21:42,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-01-31 09:21:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 91 transitions. [2022-01-31 09:21:42,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-31 09:21:42,120 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:42,120 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:21:42,140 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 09:21:42,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:42,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash 961270586, now seen corresponding path program 2 times [2022-01-31 09:21:42,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:42,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023995708] [2022-01-31 09:21:42,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:42,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:42,349 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:42,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448923504] [2022-01-31 09:21:42,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 09:21:42,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:42,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:42,351 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 09:21:42,352 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 09:21:42,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-31 09:21:42,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:21:42,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-31 09:21:42,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2022-01-31 09:21:42,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-31 09:21:42,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023995708] [2022-01-31 09:21:42,776 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:42,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448923504] [2022-01-31 09:21:42,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448923504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 09:21:42,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 09:21:42,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-31 09:21:42,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242466256] [2022-01-31 09:21:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 09:21:42,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-31 09:21:42,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:42,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-31 09:21:42,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-31 09:21:42,777 INFO L87 Difference]: Start difference. First operand 74 states and 91 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 09:21:42,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:42,851 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions. [2022-01-31 09:21:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-31 09:21:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2022-01-31 09:21:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:42,853 INFO L225 Difference]: With dead ends: 86 [2022-01-31 09:21:42,853 INFO L226 Difference]: Without dead ends: 86 [2022-01-31 09:21:42,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 09:21:42,856 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 37 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:42,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 100 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 09:21:42,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-01-31 09:21:42,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-01-31 09:21:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 75 states have internal predecessors, (95), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 09:21:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2022-01-31 09:21:42,868 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 70 [2022-01-31 09:21:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2022-01-31 09:21:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 09:21:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2022-01-31 09:21:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-31 09:21:42,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:42,870 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:21:42,893 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 09:21:43,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:43,090 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:43,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:43,090 INFO L85 PathProgramCache]: Analyzing trace with hash 265270041, now seen corresponding path program 1 times [2022-01-31 09:21:43,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:43,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300561862] [2022-01-31 09:21:43,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:43,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:43,126 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:43,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169166704] [2022-01-31 09:21:43,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:43,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:43,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:43,131 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 09:21:43,132 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 09:21:43,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:21:43,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 09:21:43,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 09:21:43,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:21:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 2 proven. 235 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 09:21:43,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:43,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300561862] [2022-01-31 09:21:43,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:43,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169166704] [2022-01-31 09:21:43,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169166704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:21:43,773 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:21:43,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-01-31 09:21:43,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689899547] [2022-01-31 09:21:43,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:21:43,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-31 09:21:43,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-31 09:21:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-01-31 09:21:43,775 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:21:44,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:44,301 INFO L93 Difference]: Finished difference Result 393 states and 553 transitions. [2022-01-31 09:21:44,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-31 09:21:44,302 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 78 [2022-01-31 09:21:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:44,304 INFO L225 Difference]: With dead ends: 393 [2022-01-31 09:21:44,304 INFO L226 Difference]: Without dead ends: 393 [2022-01-31 09:21:44,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-01-31 09:21:44,305 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 674 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:44,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 167 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 09:21:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-31 09:21:44,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 146. [2022-01-31 09:21:44,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 135 states have (on average 1.2814814814814814) internal successors, (173), 135 states have internal predecessors, (173), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 09:21:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 184 transitions. [2022-01-31 09:21:44,321 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 184 transitions. Word has length 78 [2022-01-31 09:21:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:44,321 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 184 transitions. [2022-01-31 09:21:44,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:21:44,321 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 184 transitions. [2022-01-31 09:21:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-31 09:21:44,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:44,323 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 11, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:21:44,343 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 09:21:44,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:44,543 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:44,544 INFO L85 PathProgramCache]: Analyzing trace with hash 195391865, now seen corresponding path program 2 times [2022-01-31 09:21:44,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:44,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811469213] [2022-01-31 09:21:44,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:44,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:44,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:44,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505395523] [2022-01-31 09:21:44,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 09:21:44,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:44,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:44,576 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 09:21:44,577 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 09:21:44,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 09:21:44,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:21:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-31 09:21:44,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 0 proven. 1177 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-31 09:21:45,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:21:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1182 backedges. 2 proven. 1177 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-31 09:21:46,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:21:46,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811469213] [2022-01-31 09:21:46,063 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:21:46,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505395523] [2022-01-31 09:21:46,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505395523] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:21:46,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:21:46,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2022-01-31 09:21:46,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728007389] [2022-01-31 09:21:46,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:21:46,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-31 09:21:46,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:21:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-31 09:21:46,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2022-01-31 09:21:46,066 INFO L87 Difference]: Start difference. First operand 146 states and 184 transitions. Second operand has 50 states, 50 states have (on average 4.96) internal successors, (248), 50 states have internal predecessors, (248), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:21:47,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:21:47,684 INFO L93 Difference]: Finished difference Result 801 states and 1141 transitions. [2022-01-31 09:21:47,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-31 09:21:47,685 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.96) internal successors, (248), 50 states have internal predecessors, (248), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 138 [2022-01-31 09:21:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:21:47,688 INFO L225 Difference]: With dead ends: 801 [2022-01-31 09:21:47,688 INFO L226 Difference]: Without dead ends: 801 [2022-01-31 09:21:47,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2022-01-31 09:21:47,690 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 1227 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-31 09:21:47,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 224 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-31 09:21:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-01-31 09:21:47,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 266. [2022-01-31 09:21:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 255 states have (on average 1.2901960784313726) internal successors, (329), 255 states have internal predecessors, (329), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-01-31 09:21:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 340 transitions. [2022-01-31 09:21:47,709 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 340 transitions. Word has length 138 [2022-01-31 09:21:47,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:21:47,710 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 340 transitions. [2022-01-31 09:21:47,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.96) internal successors, (248), 50 states have internal predecessors, (248), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:21:47,710 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 340 transitions. [2022-01-31 09:21:47,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-01-31 09:21:47,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:21:47,712 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 23, 23, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:21:47,733 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 09:21:47,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:47,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:21:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:21:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash -771955143, now seen corresponding path program 3 times [2022-01-31 09:21:47,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:21:47,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898872234] [2022-01-31 09:21:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:21:47,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:21:47,955 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:21:47,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502724917] [2022-01-31 09:21:47,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 09:21:47,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:21:47,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:21:47,956 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 09:21:47,957 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 09:21:48,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-31 09:21:48,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:21:48,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-31 09:21:48,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:21:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5226 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-01-31 09:21:49,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:22:11,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5226 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 5221 trivial. 0 not checked. [2022-01-31 09:22:11,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:22:11,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898872234] [2022-01-31 09:22:11,019 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:22:11,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502724917] [2022-01-31 09:22:11,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502724917] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:22:11,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:22:11,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2022-01-31 09:22:11,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215187050] [2022-01-31 09:22:11,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:22:11,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-31 09:22:11,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:22:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-31 09:22:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=88, Unknown=7, NotChecked=0, Total=132 [2022-01-31 09:22:11,021 INFO L87 Difference]: Start difference. First operand 266 states and 340 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 09:22:17,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:22:17,649 INFO L93 Difference]: Finished difference Result 286 states and 367 transitions. [2022-01-31 09:22:17,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-31 09:22:17,650 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 258 [2022-01-31 09:22:17,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:22:17,651 INFO L225 Difference]: With dead ends: 286 [2022-01-31 09:22:17,651 INFO L226 Difference]: Without dead ends: 286 [2022-01-31 09:22:17,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 505 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=79, Invalid=183, Unknown=10, NotChecked=0, Total=272 [2022-01-31 09:22:17,652 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 129 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-31 09:22:17,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 144 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-31 09:22:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-01-31 09:22:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2022-01-31 09:22:17,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 270 states have (on average 1.288888888888889) internal successors, (348), 270 states have internal predecessors, (348), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 09:22:17,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 367 transitions. [2022-01-31 09:22:17,658 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 367 transitions. Word has length 258 [2022-01-31 09:22:17,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:22:17,658 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 367 transitions. [2022-01-31 09:22:17,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-01-31 09:22:17,659 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 367 transitions. [2022-01-31 09:22:17,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-31 09:22:17,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:22:17,661 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 23, 23, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:22:17,671 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 09:22:17,861 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,SelfDestructingSolverStorable7 [2022-01-31 09:22:17,862 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:22:17,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:22:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1258893387, now seen corresponding path program 4 times [2022-01-31 09:22:17,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:22:17,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177865012] [2022-01-31 09:22:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:22:17,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:22:17,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:22:17,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007307746] [2022-01-31 09:22:17,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 09:22:17,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:22:17,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:22:17,897 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 09:22:17,899 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 09:22:18,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 09:22:18,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:22:18,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-31 09:22:18,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:22:18,111 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 17 treesize of output 13 [2022-01-31 09:22:18,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-01-31 09:22:18,424 INFO L134 CoverageAnalysis]: Checked inductivity of 5326 backedges. 399 proven. 4 refuted. 0 times theorem prover too weak. 4923 trivial. 0 not checked. [2022-01-31 09:22:18,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:22:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5326 backedges. 409 proven. 4 refuted. 0 times theorem prover too weak. 4913 trivial. 0 not checked. [2022-01-31 09:22:18,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:22:18,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177865012] [2022-01-31 09:22:18,801 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:22:18,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007307746] [2022-01-31 09:22:18,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007307746] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:22:18,801 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:22:18,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-01-31 09:22:18,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275905296] [2022-01-31 09:22:18,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:22:18,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-31 09:22:18,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:22:18,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-31 09:22:18,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-01-31 09:22:18,802 INFO L87 Difference]: Start difference. First operand 286 states and 367 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:22:18,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:22:18,983 INFO L93 Difference]: Finished difference Result 334 states and 435 transitions. [2022-01-31 09:22:18,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 09:22:18,983 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 290 [2022-01-31 09:22:18,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:22:18,984 INFO L225 Difference]: With dead ends: 334 [2022-01-31 09:22:18,984 INFO L226 Difference]: Without dead ends: 334 [2022-01-31 09:22:18,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-01-31 09:22:18,985 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 36 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 09:22:18,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 156 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-31 09:22:18,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-31 09:22:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 286. [2022-01-31 09:22:18,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 270 states have (on average 1.2740740740740741) internal successors, (344), 270 states have internal predecessors, (344), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 09:22:18,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 363 transitions. [2022-01-31 09:22:18,990 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 363 transitions. Word has length 290 [2022-01-31 09:22:18,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:22:18,991 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 363 transitions. [2022-01-31 09:22:18,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:22:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 363 transitions. [2022-01-31 09:22:18,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-31 09:22:18,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:22:18,993 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 42, 23, 23, 6, 6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:22:19,017 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 09:22:19,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:22:19,207 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:22:19,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:22:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1720983947, now seen corresponding path program 1 times [2022-01-31 09:22:19,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:22:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175995592] [2022-01-31 09:22:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:22:19,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:22:19,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:22:19,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385424099] [2022-01-31 09:22:19,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:22:19,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:22:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:22:19,253 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 09:22:19,261 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 09:22:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 09:22:19,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 49 conjunts are in the unsatisfiable core [2022-01-31 09:22:19,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:22:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5326 backedges. 0 proven. 5221 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-01-31 09:22:21,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:22:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5326 backedges. 10 proven. 5221 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-31 09:22:25,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:22:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175995592] [2022-01-31 09:22:25,031 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:22:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385424099] [2022-01-31 09:22:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385424099] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:22:25,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:22:25,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 98 [2022-01-31 09:22:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879353228] [2022-01-31 09:22:25,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:22:25,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-31 09:22:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:22:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-31 09:22:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4659, Invalid=4847, Unknown=0, NotChecked=0, Total=9506 [2022-01-31 09:22:25,036 INFO L87 Difference]: Start difference. First operand 286 states and 363 transitions. Second operand has 98 states, 98 states have (on average 4.979591836734694) internal successors, (488), 98 states have internal predecessors, (488), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:22:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:22:34,658 INFO L93 Difference]: Finished difference Result 3065 states and 4480 transitions. [2022-01-31 09:22:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-31 09:22:34,660 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 4.979591836734694) internal successors, (488), 98 states have internal predecessors, (488), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 290 [2022-01-31 09:22:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:22:34,668 INFO L225 Difference]: With dead ends: 3065 [2022-01-31 09:22:34,668 INFO L226 Difference]: Without dead ends: 3065 [2022-01-31 09:22:34,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 483 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4465 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=9265, Invalid=11615, Unknown=0, NotChecked=0, Total=20880 [2022-01-31 09:22:34,672 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 4228 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 1532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4275 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 2588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1532 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-31 09:22:34,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4275 Valid, 423 Invalid, 2588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1532 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-31 09:22:34,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2022-01-31 09:22:34,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 526. [2022-01-31 09:22:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 510 states have (on average 1.2862745098039217) internal successors, (656), 510 states have internal predecessors, (656), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 09:22:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 675 transitions. [2022-01-31 09:22:34,736 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 675 transitions. Word has length 290 [2022-01-31 09:22:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:22:34,737 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 675 transitions. [2022-01-31 09:22:34,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 4.979591836734694) internal successors, (488), 98 states have internal predecessors, (488), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:22:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 675 transitions. [2022-01-31 09:22:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2022-01-31 09:22:34,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:22:34,746 INFO L514 BasicCegarLoop]: trace histogram [94, 94, 94, 90, 47, 47, 6, 6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:22:34,769 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 09:22:34,959 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,SelfDestructingSolverStorable9 [2022-01-31 09:22:34,960 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:22:34,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:22:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -648402955, now seen corresponding path program 2 times [2022-01-31 09:22:34,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:22:34,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418881742] [2022-01-31 09:22:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:22:34,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:22:35,008 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:22:35,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667065028] [2022-01-31 09:22:35,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 09:22:35,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:22:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:22:35,009 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 09:22:35,010 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 09:22:35,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 09:22:35,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:22:35,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 97 conjunts are in the unsatisfiable core [2022-01-31 09:22:35,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:22:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 22054 backedges. 0 proven. 21949 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-01-31 09:22:40,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:23:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 22054 backedges. 10 proven. 21949 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-01-31 09:23:03,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:23:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418881742] [2022-01-31 09:23:03,714 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:23:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667065028] [2022-01-31 09:23:03,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667065028] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:23:03,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:23:03,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 98] total 194 [2022-01-31 09:23:03,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678027071] [2022-01-31 09:23:03,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:23:03,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2022-01-31 09:23:03,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:23:03,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2022-01-31 09:23:03,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18531, Invalid=18911, Unknown=0, NotChecked=0, Total=37442 [2022-01-31 09:23:03,723 INFO L87 Difference]: Start difference. First operand 526 states and 675 transitions. Second operand has 194 states, 194 states have (on average 4.989690721649485) internal successors, (968), 194 states have internal predecessors, (968), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:24:44,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:24:44,515 INFO L93 Difference]: Finished difference Result 6233 states and 9136 transitions. [2022-01-31 09:24:44,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-31 09:24:44,521 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 4.989690721649485) internal successors, (968), 194 states have internal predecessors, (968), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 530 [2022-01-31 09:24:44,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:24:44,540 INFO L225 Difference]: With dead ends: 6233 [2022-01-31 09:24:44,540 INFO L226 Difference]: Without dead ends: 6233 [2022-01-31 09:24:44,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1154 GetRequests, 867 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18145 ImplicationChecksByTransitivity, 96.7s TimeCoverageRelationStatistics Valid=36961, Invalid=46271, Unknown=0, NotChecked=0, Total=83232 [2022-01-31 09:24:44,547 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 7415 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 2884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7510 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 5504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2884 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-01-31 09:24:44,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7510 Valid, 836 Invalid, 5504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2884 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-01-31 09:24:44,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6233 states. [2022-01-31 09:24:44,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6233 to 1006. [2022-01-31 09:24:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 990 states have (on average 1.292929292929293) internal successors, (1280), 990 states have internal predecessors, (1280), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 09:24:44,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1299 transitions. [2022-01-31 09:24:44,664 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1299 transitions. Word has length 530 [2022-01-31 09:24:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:24:44,664 INFO L470 AbstractCegarLoop]: Abstraction has 1006 states and 1299 transitions. [2022-01-31 09:24:44,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 4.989690721649485) internal successors, (968), 194 states have internal predecessors, (968), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-01-31 09:24:44,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1299 transitions. [2022-01-31 09:24:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2022-01-31 09:24:44,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:24:44,679 INFO L514 BasicCegarLoop]: trace histogram [190, 190, 190, 186, 95, 95, 6, 6, 6, 6, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:24:44,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-31 09:24:44,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-31 09:24:44,904 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:24:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:24:44,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1117141749, now seen corresponding path program 3 times [2022-01-31 09:24:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:24:44,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769358920] [2022-01-31 09:24:44,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:24:44,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:24:44,975 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:24:44,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609459306] [2022-01-31 09:24:44,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-31 09:24:44,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:24:44,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:24:44,977 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 09:24:44,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-31 09:24:45,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-31 09:24:45,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:24:45,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-31 09:24:45,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:24:48,861 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 17 treesize of output 13 [2022-01-31 09:24:48,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 9 [2022-01-31 09:24:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 90070 backedges. 189 proven. 757 refuted. 0 times theorem prover too weak. 89124 trivial. 0 not checked. [2022-01-31 09:24:49,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:26:43,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:26:43,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769358920] [2022-01-31 09:26:43,847 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:26:43,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609459306] [2022-01-31 09:26:43,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609459306] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 09:26:43,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-01-31 09:26:43,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-01-31 09:26:43,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895407631] [2022-01-31 09:26:43,848 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-01-31 09:26:43,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-31 09:26:43,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:26:43,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-31 09:26:43,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=152, Unknown=2, NotChecked=0, Total=210 [2022-01-31 09:26:43,849 INFO L87 Difference]: Start difference. First operand 1006 states and 1299 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 09:26:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:26:44,276 INFO L93 Difference]: Finished difference Result 1489 states and 1880 transitions. [2022-01-31 09:26:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-31 09:26:44,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 1010 [2022-01-31 09:26:44,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:26:44,289 INFO L225 Difference]: With dead ends: 1489 [2022-01-31 09:26:44,289 INFO L226 Difference]: Without dead ends: 1489 [2022-01-31 09:26:44,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2013 GetRequests, 1996 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=110, Invalid=230, Unknown=2, NotChecked=0, Total=342 [2022-01-31 09:26:44,290 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-31 09:26:44,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 69 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-31 09:26:44,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2022-01-31 09:26:44,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1008. [2022-01-31 09:26:44,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 992 states have (on average 1.2933467741935485) internal successors, (1283), 992 states have internal predecessors, (1283), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 09:26:44,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1302 transitions. [2022-01-31 09:26:44,316 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1302 transitions. Word has length 1010 [2022-01-31 09:26:44,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:26:44,316 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1302 transitions. [2022-01-31 09:26:44,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 09:26:44,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1302 transitions. [2022-01-31 09:26:44,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2022-01-31 09:26:44,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:26:44,334 INFO L514 BasicCegarLoop]: trace histogram [190, 190, 190, 185, 95, 95, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:26:44,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-31 09:26:44,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-31 09:26:44,540 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:26:44,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:26:44,541 INFO L85 PathProgramCache]: Analyzing trace with hash 876601620, now seen corresponding path program 4 times [2022-01-31 09:26:44,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:26:44,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727974680] [2022-01-31 09:26:44,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:26:44,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:26:44,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:26:44,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046730460] [2022-01-31 09:26:44,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-31 09:26:44,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:26:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:26:44,614 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 09:26:44,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-31 09:26:45,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-31 09:26:45,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 09:26:45,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 09:26:45,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 09:26:45,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-31 09:26:45,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 9 [2022-01-31 09:26:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90070 backedges. 4491 proven. 4 refuted. 0 times theorem prover too weak. 85575 trivial. 0 not checked. [2022-01-31 09:26:46,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 09:26:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 90070 backedges. 4493 proven. 12 refuted. 0 times theorem prover too weak. 85565 trivial. 0 not checked. [2022-01-31 09:26:47,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 09:26:47,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727974680] [2022-01-31 09:26:47,583 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-01-31 09:26:47,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046730460] [2022-01-31 09:26:47,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046730460] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 09:26:47,584 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-31 09:26:47,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-01-31 09:26:47,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695088237] [2022-01-31 09:26:47,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-31 09:26:47,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 09:26:47,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 09:26:47,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 09:26:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-31 09:26:47,586 INFO L87 Difference]: Start difference. First operand 1008 states and 1302 transitions. Second operand has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:26:48,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 09:26:48,226 INFO L93 Difference]: Finished difference Result 1339 states and 1565 transitions. [2022-01-31 09:26:48,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-31 09:26:48,232 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1010 [2022-01-31 09:26:48,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 09:26:48,235 INFO L225 Difference]: With dead ends: 1339 [2022-01-31 09:26:48,235 INFO L226 Difference]: Without dead ends: 1339 [2022-01-31 09:26:48,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2028 GetRequests, 2005 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=203, Invalid=349, Unknown=0, NotChecked=0, Total=552 [2022-01-31 09:26:48,236 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 32 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-31 09:26:48,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 206 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-31 09:26:48,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2022-01-31 09:26:48,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1196. [2022-01-31 09:26:48,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 1180 states have (on average 1.1686440677966101) internal successors, (1379), 1180 states have internal predecessors, (1379), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-01-31 09:26:48,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1398 transitions. [2022-01-31 09:26:48,249 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1398 transitions. Word has length 1010 [2022-01-31 09:26:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 09:26:48,249 INFO L470 AbstractCegarLoop]: Abstraction has 1196 states and 1398 transitions. [2022-01-31 09:26:48,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.066666666666666) internal successors, (76), 15 states have internal predecessors, (76), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-01-31 09:26:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1398 transitions. [2022-01-31 09:26:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1011 [2022-01-31 09:26:48,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 09:26:48,256 INFO L514 BasicCegarLoop]: trace histogram [190, 190, 190, 96, 95, 95, 94, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 09:26:48,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-31 09:26:48,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-31 09:26:48,475 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 09:26:48,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 09:26:48,476 INFO L85 PathProgramCache]: Analyzing trace with hash 868468597, now seen corresponding path program 5 times [2022-01-31 09:26:48,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 09:26:48,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146549964] [2022-01-31 09:26:48,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 09:26:48,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 09:26:48,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-01-31 09:26:48,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628647839] [2022-01-31 09:26:48,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-31 09:26:48,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 09:26:48,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 09:26:48,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 09:26:48,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process