/usr/bin/java -ea -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/nla-digbench-scaling/geo1-u_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 18:44:49,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 18:44:49,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 18:44:49,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 18:44:49,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 18:44:49,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 18:44:49,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 18:44:49,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 18:44:49,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 18:44:49,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 18:44:49,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 18:44:49,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 18:44:49,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 18:44:49,064 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 18:44:49,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 18:44:49,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 18:44:49,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 18:44:49,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 18:44:49,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 18:44:49,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 18:44:49,079 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 18:44:49,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 18:44:49,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 18:44:49,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 18:44:49,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 18:44:49,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-27 18:44:49,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-27 18:44:49,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-27 18:44:49,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-27 18:44:49,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-27 18:44:49,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-27 18:44:49,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-27 18:44:49,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-27 18:44:49,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-27 18:44:49,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-27 18:44:49,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-27 18:44:49,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-27 18:44:49,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-27 18:44:49,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-27 18:44:49,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 18:44:49,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 18:44:49,100 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 18:44:49,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-27 18:44:49,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 18:44:49,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 18:44:49,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 18:44:49,113 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 18:44:49,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 18:44:49,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 18:44:49,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 18:44:49,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 18:44:49,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 18:44:49,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 18:44:49,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 18:44:49,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 18:44:49,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 18:44:49,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 18:44:49,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 18:44:49,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 18:44:49,116 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-27 18:44:49,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 18:44:49,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 18:44:49,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 18:44:49,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 18:44:49,118 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-27 18:44:49,118 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 18:44:49,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 18:44:49,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 18:44:49,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 18:44:49,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 18:44:49,348 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 18:44:49,349 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c [2022-04-27 18:44:49,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a00002d/d50028b610a94a229ddf97b1e37561da/FLAG350ec551d [2022-04-27 18:44:49,739 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 18:44:49,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c [2022-04-27 18:44:49,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a00002d/d50028b610a94a229ddf97b1e37561da/FLAG350ec551d [2022-04-27 18:44:50,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a00002d/d50028b610a94a229ddf97b1e37561da [2022-04-27 18:44:50,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 18:44:50,155 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-27 18:44:50,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 18:44:50,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 18:44:50,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 18:44:50,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74e56e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50, skipping insertion in model container [2022-04-27 18:44:50,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,166 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 18:44:50,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 18:44:50,289 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c[555,568] [2022-04-27 18:44:50,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 18:44:50,326 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 18:44:50,336 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound1.c[555,568] [2022-04-27 18:44:50,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 18:44:50,351 INFO L208 MainTranslator]: Completed translation [2022-04-27 18:44:50,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50 WrapperNode [2022-04-27 18:44:50,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 18:44:50,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 18:44:50,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 18:44:50,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 18:44:50,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,374 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 18:44:50,376 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 18:44:50,376 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 18:44:50,376 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 18:44:50,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 18:44:50,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 18:44:50,401 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) [2022-04-27 18:44:50,402 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 [2022-04-27 18:44:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 18:44:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 18:44:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 18:44:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 18:44:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 18:44:50,430 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 18:44:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 18:44:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 18:44:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 18:44:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 18:44:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-27 18:44:50,431 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 18:44:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 18:44:50,432 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 18:44:50,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 18:44:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 18:44:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 18:44:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 18:44:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 18:44:50,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 18:44:50,481 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 18:44:50,482 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 18:44:50,613 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 18:44:50,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 18:44:50,619 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 18:44:50,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 06:44:50 BoogieIcfgContainer [2022-04-27 18:44:50,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 18:44:50,621 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-27 18:44:50,621 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-27 18:44:50,637 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-27 18:44:50,641 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 06:44:50" (1/1) ... [2022-04-27 18:44:50,643 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-27 18:44:50,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 06:44:50 BasicIcfg [2022-04-27 18:44:50,663 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-27 18:44:50,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 18:44:50,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 18:44:50,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 18:44:50,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 06:44:50" (1/4) ... [2022-04-27 18:44:50,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72285cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 06:44:50, skipping insertion in model container [2022-04-27 18:44:50,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:44:50" (2/4) ... [2022-04-27 18:44:50,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72285cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 06:44:50, skipping insertion in model container [2022-04-27 18:44:50,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 06:44:50" (3/4) ... [2022-04-27 18:44:50,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72285cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 06:44:50, skipping insertion in model container [2022-04-27 18:44:50,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 06:44:50" (4/4) ... [2022-04-27 18:44:50,673 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound1.cJordan [2022-04-27 18:44:50,684 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-27 18:44:50,685 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 18:44:50,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 18:44:50,725 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ae9d2cb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@337433e3 [2022-04-27 18:44:50,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 18:44:50,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-27 18:44:50,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 18:44:50,738 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 18:44:50,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 18:44:50,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 18:44:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 18:44:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash -877218113, now seen corresponding path program 1 times [2022-04-27 18:44:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 18:44:50,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552974667] [2022-04-27 18:44:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 18:44:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:44:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 18:44:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:44:50,915 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [60] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {26#true} is VALID [2022-04-27 18:44:50,916 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#true} [63] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#true} is VALID [2022-04-27 18:44:50,917 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {26#true} {26#true} [81] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#true} is VALID [2022-04-27 18:44:50,919 INFO L272 TraceCheckUtils]: 0: Hoare triple {26#true} [58] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 18:44:50,920 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [60] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {26#true} is VALID [2022-04-27 18:44:50,922 INFO L290 TraceCheckUtils]: 2: Hoare triple {26#true} [63] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#true} is VALID [2022-04-27 18:44:50,922 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {26#true} {26#true} [81] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#true} is VALID [2022-04-27 18:44:50,922 INFO L272 TraceCheckUtils]: 4: Hoare triple {26#true} [59] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#true} is VALID [2022-04-27 18:44:50,923 INFO L290 TraceCheckUtils]: 5: Hoare triple {26#true} [62] mainENTRY-->L33-3: Formula: (and (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (= (mod v_main_~z~0_2 4294967296) v_main_~y~0_2) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~z~0, main_~k~0, main_~c~0, main_~y~0] {26#true} is VALID [2022-04-27 18:44:50,924 INFO L290 TraceCheckUtils]: 6: Hoare triple {26#true} [64] L33-3-->L33-4: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {27#false} is VALID [2022-04-27 18:44:50,924 INFO L290 TraceCheckUtils]: 7: Hoare triple {27#false} [66] L33-4-->L47: Formula: (= (* v_main_~x~0_8 (mod (+ v_main_~z~0_6 4294967295) 4294967296)) v_main_~x~0_7) InVars {main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_6} OutVars{main_~x~0=v_main_~x~0_7, main_~z~0=v_main_~z~0_6} AuxVars[] AssignedVars[main_~x~0] {27#false} is VALID [2022-04-27 18:44:50,925 INFO L272 TraceCheckUtils]: 8: Hoare triple {27#false} [69] L47-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ v_main_~x~0_11 (* (- 1) v_main_~y~0_9) 1) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_11, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {27#false} is VALID [2022-04-27 18:44:50,925 INFO L290 TraceCheckUtils]: 9: Hoare triple {27#false} [72] __VERIFIER_assertENTRY-->L16: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {27#false} is VALID [2022-04-27 18:44:50,925 INFO L290 TraceCheckUtils]: 10: Hoare triple {27#false} [76] L16-->L17: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {27#false} is VALID [2022-04-27 18:44:50,925 INFO L290 TraceCheckUtils]: 11: Hoare triple {27#false} [78] L17-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {27#false} is VALID [2022-04-27 18:44:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 18:44:50,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 18:44:50,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552974667] [2022-04-27 18:44:50,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552974667] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 18:44:50,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 18:44:50,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 18:44:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845409179] [2022-04-27 18:44:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 18:44:50,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 18:44:50,938 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 18:44:50,940 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:50,962 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:44:50,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 18:44:50,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 18:44:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 18:44:50,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 18:44:50,989 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:51,107 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-04-27 18:44:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 18:44:51,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 18:44:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 18:44:51,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2022-04-27 18:44:51,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 29 transitions. [2022-04-27 18:44:51,122 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 29 transitions. [2022-04-27 18:44:51,169 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 29 edges. 29 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:44:51,178 INFO L225 Difference]: With dead ends: 24 [2022-04-27 18:44:51,178 INFO L226 Difference]: Without dead ends: 19 [2022-04-27 18:44:51,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 18:44:51,184 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 18:44:51,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 28 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 18:44:51,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-04-27 18:44:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-04-27 18:44:51,213 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 18:44:51,214 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 18:44:51,215 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 18:44:51,215 INFO L87 Difference]: Start difference. First operand 19 states. Second operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 18:44:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:51,222 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 18:44:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 18:44:51,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:44:51,223 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:44:51,223 INFO L74 IsIncluded]: Start isIncluded. First operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-27 18:44:51,224 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 19 states. [2022-04-27 18:44:51,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:51,227 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-04-27 18:44:51,227 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-04-27 18:44:51,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:44:51,228 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:44:51,228 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 18:44:51,228 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 18:44:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-27 18:44:51,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-04-27 18:44:51,232 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2022-04-27 18:44:51,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 18:44:51,232 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-04-27 18:44:51,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,233 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-04-27 18:44:51,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-27 18:44:51,234 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 18:44:51,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 18:44:51,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 18:44:51,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 18:44:51,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 18:44:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash -846712129, now seen corresponding path program 1 times [2022-04-27 18:44:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 18:44:51,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113983484] [2022-04-27 18:44:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:51,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 18:44:51,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 18:44:51,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830495237] [2022-04-27 18:44:51,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:51,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 18:44:51,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 18:44:51,272 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) [2022-04-27 18:44:51,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-27 18:44:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:44:51,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-27 18:44:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:44:51,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 18:44:51,569 INFO L272 TraceCheckUtils]: 0: Hoare triple {114#true} [58] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {114#true} is VALID [2022-04-27 18:44:51,569 INFO L290 TraceCheckUtils]: 1: Hoare triple {114#true} [60] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {114#true} is VALID [2022-04-27 18:44:51,569 INFO L290 TraceCheckUtils]: 2: Hoare triple {114#true} [63] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {114#true} is VALID [2022-04-27 18:44:51,570 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {114#true} {114#true} [81] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {114#true} is VALID [2022-04-27 18:44:51,570 INFO L272 TraceCheckUtils]: 4: Hoare triple {114#true} [59] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {114#true} is VALID [2022-04-27 18:44:51,570 INFO L290 TraceCheckUtils]: 5: Hoare triple {114#true} [62] mainENTRY-->L33-3: Formula: (and (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (= (mod v_main_~z~0_2 4294967296) v_main_~y~0_2) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~z~0, main_~k~0, main_~c~0, main_~y~0] {134#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-27 18:44:51,571 INFO L290 TraceCheckUtils]: 6: Hoare triple {134#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} [65] L33-3-->L33-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {134#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-27 18:44:51,572 INFO L290 TraceCheckUtils]: 7: Hoare triple {134#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} [68] L33-1-->L34: Formula: (< |v_main_#t~post6_4| 1) InVars {main_#t~post6=|v_main_#t~post6_4|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {134#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-27 18:44:51,573 INFO L272 TraceCheckUtils]: 8: Hoare triple {134#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} [70] L34-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_1| (ite (= (+ (* (- 1) v_main_~y~0_8) (* (- 1) v_main_~x~0_10) (* v_main_~x~0_10 (mod v_main_~z~0_7 4294967296)) 1) 0) 1 0)) InVars {main_~y~0=v_main_~y~0_8, main_~x~0=v_main_~x~0_10, main_~z~0=v_main_~z~0_7} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~z~0, main_~y~0] {144#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-27 18:44:51,573 INFO L290 TraceCheckUtils]: 9: Hoare triple {144#(<= 1 |__VERIFIER_assert_#in~cond|)} [72] __VERIFIER_assertENTRY-->L16: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {148#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-27 18:44:51,574 INFO L290 TraceCheckUtils]: 10: Hoare triple {148#(<= 1 __VERIFIER_assert_~cond)} [76] L16-->L17: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {115#false} is VALID [2022-04-27 18:44:51,574 INFO L290 TraceCheckUtils]: 11: Hoare triple {115#false} [78] L17-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {115#false} is VALID [2022-04-27 18:44:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 18:44:51,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 18:44:51,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 18:44:51,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113983484] [2022-04-27 18:44:51,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 18:44:51,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830495237] [2022-04-27 18:44:51,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830495237] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 18:44:51,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 18:44:51,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-27 18:44:51,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606455251] [2022-04-27 18:44:51,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 18:44:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 18:44:51,577 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 18:44:51,577 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,589 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:44:51,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-27 18:44:51,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 18:44:51,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-27 18:44:51,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-27 18:44:51,590 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:51,692 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-27 18:44:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-27 18:44:51,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-27 18:44:51,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 18:44:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-27 18:44:51,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 32 transitions. [2022-04-27 18:44:51,697 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 32 transitions. [2022-04-27 18:44:51,725 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:44:51,727 INFO L225 Difference]: With dead ends: 27 [2022-04-27 18:44:51,727 INFO L226 Difference]: Without dead ends: 27 [2022-04-27 18:44:51,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-27 18:44:51,728 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 18:44:51,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 18:44:51,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-04-27 18:44:51,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2022-04-27 18:44:51,736 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 18:44:51,736 INFO L82 GeneralOperation]: Start isEquivalent. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:51,738 INFO L74 IsIncluded]: Start isIncluded. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:51,739 INFO L87 Difference]: Start difference. First operand 27 states. Second operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:51,745 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-27 18:44:51,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-27 18:44:51,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:44:51,746 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:44:51,746 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-27 18:44:51,746 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 27 states. [2022-04-27 18:44:51,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:51,748 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2022-04-27 18:44:51,748 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2022-04-27 18:44:51,748 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:44:51,748 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:44:51,748 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 18:44:51,748 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 18:44:51,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.25) internal successors, (20), 18 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-04-27 18:44:51,750 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2022-04-27 18:44:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 18:44:51,750 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-04-27 18:44:51,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-04-27 18:44:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-04-27 18:44:51,751 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 18:44:51,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 18:44:51,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-27 18:44:51,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 18:44:51,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 18:44:51,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 18:44:51,956 INFO L85 PathProgramCache]: Analyzing trace with hash -510688659, now seen corresponding path program 1 times [2022-04-27 18:44:51,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 18:44:51,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760500997] [2022-04-27 18:44:51,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 18:44:51,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 18:44:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92374345] [2022-04-27 18:44:51,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:51,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 18:44:51,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 18:44:51,974 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) [2022-04-27 18:44:52,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-27 18:44:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:44:52,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-27 18:44:52,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:44:52,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-27 18:44:52,122 INFO L272 TraceCheckUtils]: 0: Hoare triple {262#true} [58] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {262#true} is VALID [2022-04-27 18:44:52,123 INFO L290 TraceCheckUtils]: 1: Hoare triple {262#true} [60] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= v_~counter~0_3 0) (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 2) 9) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{~counter~0=v_~counter~0_3, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[~counter~0, #NULL.offset, #NULL.base] {270#(<= ~counter~0 0)} is VALID [2022-04-27 18:44:52,123 INFO L290 TraceCheckUtils]: 2: Hoare triple {270#(<= ~counter~0 0)} [63] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {270#(<= ~counter~0 0)} is VALID [2022-04-27 18:44:52,124 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {270#(<= ~counter~0 0)} {262#true} [81] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {270#(<= ~counter~0 0)} is VALID [2022-04-27 18:44:52,124 INFO L272 TraceCheckUtils]: 4: Hoare triple {270#(<= ~counter~0 0)} [59] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {270#(<= ~counter~0 0)} is VALID [2022-04-27 18:44:52,125 INFO L290 TraceCheckUtils]: 5: Hoare triple {270#(<= ~counter~0 0)} [62] mainENTRY-->L33-3: Formula: (and (= v_main_~k~0_2 |v_main_#t~nondet5_2|) (= v_main_~c~0_2 1) (= (mod v_main_~z~0_2 4294967296) v_main_~y~0_2) (= v_main_~x~0_2 1) (= v_main_~z~0_2 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet5=|v_main_#t~nondet5_2|, main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~c~0=v_main_~c~0_2, main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_2, main_~z~0=v_main_~z~0_2, main_~k~0=v_main_~k~0_2} AuxVars[] AssignedVars[main_#t~nondet5, main_#t~nondet4, main_~x~0, main_~z~0, main_~k~0, main_~c~0, main_~y~0] {270#(<= ~counter~0 0)} is VALID [2022-04-27 18:44:52,125 INFO L290 TraceCheckUtils]: 6: Hoare triple {270#(<= ~counter~0 0)} [65] L33-3-->L33-1: Formula: (and (= |v_main_#t~post6_5| v_~counter~0_2) (= v_~counter~0_1 (+ |v_main_#t~post6_5| 1))) InVars {~counter~0=v_~counter~0_2} OutVars{~counter~0=v_~counter~0_1, main_#t~post6=|v_main_#t~post6_5|} AuxVars[] AssignedVars[~counter~0, main_#t~post6] {286#(<= |main_#t~post6| 0)} is VALID [2022-04-27 18:44:52,126 INFO L290 TraceCheckUtils]: 7: Hoare triple {286#(<= |main_#t~post6| 0)} [67] L33-1-->L33-4: Formula: (not (< |v_main_#t~post6_2| 1)) InVars {main_#t~post6=|v_main_#t~post6_2|} OutVars{} AuxVars[] AssignedVars[main_#t~post6] {263#false} is VALID [2022-04-27 18:44:52,126 INFO L290 TraceCheckUtils]: 8: Hoare triple {263#false} [66] L33-4-->L47: Formula: (= (* v_main_~x~0_8 (mod (+ v_main_~z~0_6 4294967295) 4294967296)) v_main_~x~0_7) InVars {main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_6} OutVars{main_~x~0=v_main_~x~0_7, main_~z~0=v_main_~z~0_6} AuxVars[] AssignedVars[main_~x~0] {263#false} is VALID [2022-04-27 18:44:52,126 INFO L272 TraceCheckUtils]: 9: Hoare triple {263#false} [69] L47-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= (+ v_main_~x~0_11 (* (- 1) v_main_~y~0_9) 1) 0) 1 0)) InVars {main_~x~0=v_main_~x~0_11, main_~y~0=v_main_~y~0_9} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~x~0, main_~y~0] {263#false} is VALID [2022-04-27 18:44:52,127 INFO L290 TraceCheckUtils]: 10: Hoare triple {263#false} [72] __VERIFIER_assertENTRY-->L16: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {263#false} is VALID [2022-04-27 18:44:52,127 INFO L290 TraceCheckUtils]: 11: Hoare triple {263#false} [76] L16-->L17: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {263#false} is VALID [2022-04-27 18:44:52,127 INFO L290 TraceCheckUtils]: 12: Hoare triple {263#false} [78] L17-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {263#false} is VALID [2022-04-27 18:44:52,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 18:44:52,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-27 18:44:52,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 18:44:52,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760500997] [2022-04-27 18:44:52,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-27 18:44:52,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92374345] [2022-04-27 18:44:52,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92374345] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 18:44:52,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 18:44:52,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-27 18:44:52,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683040700] [2022-04-27 18:44:52,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 18:44:52,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-27 18:44:52,129 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 18:44:52,129 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:52,140 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 13 edges. 13 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:44:52,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-27 18:44:52,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 18:44:52,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-27 18:44:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 18:44:52,141 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:52,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:52,177 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 18:44:52,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-27 18:44:52,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-04-27 18:44:52,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 18:44:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-04-27 18:44:52,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:52,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2022-04-27 18:44:52,180 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 23 transitions. [2022-04-27 18:44:52,205 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:44:52,207 INFO L225 Difference]: With dead ends: 25 [2022-04-27 18:44:52,207 INFO L226 Difference]: Without dead ends: 25 [2022-04-27 18:44:52,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-27 18:44:52,208 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-27 18:44:52,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 18:44:52,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-27 18:44:52,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-27 18:44:52,211 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 18:44:52,212 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:52,212 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:52,212 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:52,214 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 18:44:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 18:44:52,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:44:52,214 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:44:52,215 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-27 18:44:52,215 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Second operand 25 states. [2022-04-27 18:44:52,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:44:52,217 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-27 18:44:52,217 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 18:44:52,217 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:44:52,217 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:44:52,217 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 18:44:52,217 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 18:44:52,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-27 18:44:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-27 18:44:52,219 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2022-04-27 18:44:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 18:44:52,219 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-27 18:44:52,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-27 18:44:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-27 18:44:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-04-27 18:44:52,220 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 18:44:52,220 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 18:44:52,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-27 18:44:52,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-27 18:44:52,438 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 18:44:52,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 18:44:52,438 INFO L85 PathProgramCache]: Analyzing trace with hash -264482511, now seen corresponding path program 1 times [2022-04-27 18:44:52,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 18:44:52,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85980962] [2022-04-27 18:44:52,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:52,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 18:44:52,451 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-27 18:44:52,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47087517] [2022-04-27 18:44:52,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:44:52,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 18:44:52,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 18:44:52,457 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) [2022-04-27 18:44:52,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-27 18:44:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 18:44:52,507 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 18:44:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 18:44:52,537 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 18:44:52,538 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 18:44:52,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 18:44:52,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-27 18:44:52,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-27 18:44:52,758 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-04-27 18:44:52,760 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 18:44:52,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 06:44:52 BasicIcfg [2022-04-27 18:44:52,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 18:44:52,779 INFO L158 Benchmark]: Toolchain (without parser) took 2623.47ms. Allocated memory is still 174.1MB. Free memory was 126.5MB in the beginning and 103.6MB in the end (delta: 22.9MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2022-04-27 18:44:52,779 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory was 142.6MB in the beginning and 142.5MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 18:44:52,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.97ms. Allocated memory is still 174.1MB. Free memory was 126.3MB in the beginning and 152.8MB in the end (delta: -26.4MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. [2022-04-27 18:44:52,780 INFO L158 Benchmark]: Boogie Preprocessor took 23.25ms. Allocated memory is still 174.1MB. Free memory was 152.8MB in the beginning and 151.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-27 18:44:52,780 INFO L158 Benchmark]: RCFGBuilder took 244.51ms. Allocated memory is still 174.1MB. Free memory was 151.2MB in the beginning and 140.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-27 18:44:52,781 INFO L158 Benchmark]: IcfgTransformer took 42.23ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 139.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 18:44:52,781 INFO L158 Benchmark]: TraceAbstraction took 2110.75ms. Allocated memory is still 174.1MB. Free memory was 138.9MB in the beginning and 103.6MB in the end (delta: 35.3MB). Peak memory consumption was 35.3MB. Max. memory is 8.0GB. [2022-04-27 18:44:52,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 174.1MB. Free memory was 142.6MB in the beginning and 142.5MB in the end (delta: 69.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.97ms. Allocated memory is still 174.1MB. Free memory was 126.3MB in the beginning and 152.8MB in the end (delta: -26.4MB). Peak memory consumption was 13.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.25ms. Allocated memory is still 174.1MB. Free memory was 152.8MB in the beginning and 151.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 244.51ms. Allocated memory is still 174.1MB. Free memory was 151.2MB in the beginning and 140.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 42.23ms. Allocated memory is still 174.1MB. Free memory was 140.7MB in the beginning and 139.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2110.75ms. Allocated memory is still 174.1MB. Free memory was 138.9MB in the beginning and 103.6MB in the end (delta: 35.3MB). Peak memory consumption was 35.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [\old(counter)=4, counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_uint() [L27] k = __VERIFIER_nondet_uint() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [\old(counter)=0, c=1, counter=0, k=0, x=1, y=0, z=0] [L33] EXPR counter++ VAL [\old(counter)=0, c=1, counter=1, counter++=0, k=0, x=1, y=0, z=0] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(x*z - x - y + 1 == 0) VAL [\old(counter)=0, c=1, counter=1, k=0, x=1, y=0, z=0] [L36] COND TRUE !(c < k) VAL [\old(counter)=0, c=1, counter=1, k=0, x=1, y=0, z=0] [L45] x = x * (z - 1) VAL [\old(counter)=0, c=1, counter=1, k=0, x=4294967295, y=0, z=0] [L47] CALL __VERIFIER_assert(1 + x - y == 0) VAL [\old(cond)=0, \old(counter)=0, counter=1] [L16] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] [L18] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 58 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 83 SizeOfPredicates, 2 NumberOfNonLiveVariables, 144 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-27 18:44:52,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...