/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 05:25:28,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 05:25:28,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 05:25:28,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 05:25:28,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 05:25:28,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 05:25:28,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 05:25:28,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 05:25:28,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 05:25:28,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 05:25:28,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 05:25:28,606 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 05:25:28,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 05:25:28,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 05:25:28,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 05:25:28,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 05:25:28,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 05:25:28,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 05:25:28,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 05:25:28,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 05:25:28,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 05:25:28,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 05:25:28,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 05:25:28,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 05:25:28,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 05:25:28,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 05:25:28,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 05:25:28,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 05:25:28,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 05:25:28,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 05:25:28,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 05:25:28,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 05:25:28,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 05:25:28,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 05:25:28,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 05:25:28,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 05:25:28,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-04-16 05:25:28,650 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 05:25:28,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 05:25:28,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 05:25:28,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 05:25:28,653 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 05:25:28,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 05:25:28,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 05:25:28,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 05:25:28,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 05:25:28,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 05:25:28,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 05:25:28,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 05:25:28,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 05:25:28,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 05:25:28,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-04-16 05:25:28,656 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-04-16 05:25:28,656 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 05:25:28,914 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 05:25:28,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 05:25:28,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 05:25:28,931 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 05:25:28,931 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 05:25:28,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound5.c [2021-04-16 05:25:28,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2bf986/ea3e77ae99fb472dabab536ce511e6d7/FLAG2fb19745a [2021-04-16 05:25:29,276 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 05:25:29,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_unwindbound5.c [2021-04-16 05:25:29,281 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2bf986/ea3e77ae99fb472dabab536ce511e6d7/FLAG2fb19745a [2021-04-16 05:25:29,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1b2bf986/ea3e77ae99fb472dabab536ce511e6d7 [2021-04-16 05:25:29,298 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 05:25:29,300 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-04-16 05:25:29,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 05:25:29,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 05:25:29,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 05:25:29,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2efc836d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29, skipping insertion in model container [2021-04-16 05:25:29,307 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 05:25:29,329 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 05:25:29,438 WARN L226 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_unwindbound5.c[563,576] [2021-04-16 05:25:29,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 05:25:29,455 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 05:25:29,463 WARN L226 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_unwindbound5.c[563,576] [2021-04-16 05:25:29,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 05:25:29,481 INFO L208 MainTranslator]: Completed translation [2021-04-16 05:25:29,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29 WrapperNode [2021-04-16 05:25:29,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 05:25:29,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 05:25:29,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 05:25:29,484 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 05:25:29,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 05:25:29,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 05:25:29,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 05:25:29,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 05:25:29,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 05:25:29,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 05:25:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 05:25:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 05:25:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 05:25:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 05:25:29,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 05:25:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 05:25:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 05:25:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 05:25:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 05:25:29,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 05:25:29,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 05:25:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 05:25:29,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 05:25:29,768 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 05:25:29,768 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 05:25:29,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 05:25:29 BoogieIcfgContainer [2021-04-16 05:25:29,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 05:25:29,770 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-04-16 05:25:29,770 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-04-16 05:25:29,770 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-04-16 05:25:29,772 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 05:25:29" (1/1) ... [2021-04-16 05:25:29,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 05:25:29 BasicIcfg [2021-04-16 05:25:29,785 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-04-16 05:25:29,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 05:25:29,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 05:25:29,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 05:25:29,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 05:25:29" (1/4) ... [2021-04-16 05:25:29,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595844dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 05:25:29, skipping insertion in model container [2021-04-16 05:25:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 05:25:29" (2/4) ... [2021-04-16 05:25:29,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595844dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 05:25:29, skipping insertion in model container [2021-04-16 05:25:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 05:25:29" (3/4) ... [2021-04-16 05:25:29,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595844dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 05:25:29, skipping insertion in model container [2021-04-16 05:25:29,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 16.04 05:25:29" (4/4) ... [2021-04-16 05:25:29,790 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_unwindbound5.cJordan [2021-04-16 05:25:29,809 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-04-16 05:25:29,812 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 05:25:29,823 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 05:25:29,834 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 05:25:29,834 INFO L377 AbstractCegarLoop]: Hoare is false [2021-04-16 05:25:29,834 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-04-16 05:25:29,834 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 05:25:29,834 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 05:25:29,834 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 05:25:29,834 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 05:25:29,834 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 05:25:29,842 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) [2021-04-16 05:25:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 05:25:29,846 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 05:25:29,846 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 05:25:29,847 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 05:25:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 05:25:29,850 INFO L82 PathProgramCache]: Analyzing trace with hash -877218113, now seen corresponding path program 1 times [2021-04-16 05:25:29,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 05:25:29,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113128722] [2021-04-16 05:25:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 05:25:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 05:25:29,973 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:29,974 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:29,975 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:29,975 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 05:25:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 05:25:30,029 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,030 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 05:25:30,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113128722] [2021-04-16 05:25:30,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 05:25:30,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 05:25:30,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739991505] [2021-04-16 05:25:30,036 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 05:25:30,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 05:25:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 05:25:30,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 05:25:30,048 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) [2021-04-16 05:25:30,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 05:25:30,100 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-04-16 05:25:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 05:25:30,102 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 [2021-04-16 05:25:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 05:25:30,106 INFO L225 Difference]: With dead ends: 24 [2021-04-16 05:25:30,107 INFO L226 Difference]: Without dead ends: 19 [2021-04-16 05:25:30,108 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 05:25:30,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-04-16 05:25:30,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-04-16 05:25:30,127 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) [2021-04-16 05:25:30,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-04-16 05:25:30,129 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2021-04-16 05:25:30,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 05:25:30,129 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-04-16 05:25:30,130 INFO L481 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) [2021-04-16 05:25:30,130 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-04-16 05:25:30,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 05:25:30,130 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 05:25:30,131 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 05:25:30,131 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 05:25:30,131 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 05:25:30,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 05:25:30,132 INFO L82 PathProgramCache]: Analyzing trace with hash -846712129, now seen corresponding path program 1 times [2021-04-16 05:25:30,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 05:25:30,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720328293] [2021-04-16 05:25:30,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 05:25:30,163 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-04-16 05:25:30,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170028494] [2021-04-16 05:25:30,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 05:25:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 05:25:30,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjunts are in the unsatisfiable core [2021-04-16 05:25:30,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 05:25:30,252 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,253 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,254 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,254 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,255 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,255 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,256 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,257 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,261 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,261 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,262 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,262 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,263 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,263 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,264 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,264 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,265 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,266 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,266 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,267 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,268 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,269 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,270 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,271 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,271 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,272 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,272 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,273 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,273 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,276 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,278 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,278 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,279 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,279 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,280 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,286 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,286 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,287 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,288 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,289 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,289 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,290 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,290 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,291 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,291 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,292 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,292 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,293 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,293 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-04-16 05:25:30,297 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,302 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,303 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,303 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,311 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,312 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 05:25:30,312 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,321 INFO L142 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-04-16 05:25:30,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,322 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,323 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 05:25:30,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720328293] [2021-04-16 05:25:30,330 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-04-16 05:25:30,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170028494] [2021-04-16 05:25:30,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 05:25:30,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 05:25:30,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687042712] [2021-04-16 05:25:30,331 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 05:25:30,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 05:25:30,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 05:25:30,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 05:25:30,333 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) [2021-04-16 05:25:30,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 05:25:30,369 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-04-16 05:25:30,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 05:25:30,370 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 [2021-04-16 05:25:30,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 05:25:30,371 INFO L225 Difference]: With dead ends: 27 [2021-04-16 05:25:30,371 INFO L226 Difference]: Without dead ends: 27 [2021-04-16 05:25:30,371 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-04-16 05:25:30,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-04-16 05:25:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-04-16 05:25:30,377 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) [2021-04-16 05:25:30,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-04-16 05:25:30,378 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2021-04-16 05:25:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 05:25:30,379 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-04-16 05:25:30,379 INFO L481 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) [2021-04-16 05:25:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-04-16 05:25:30,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 05:25:30,379 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 05:25:30,379 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 05:25:30,586 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-04-16 05:25:30,586 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 05:25:30,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 05:25:30,587 INFO L82 PathProgramCache]: Analyzing trace with hash -510688659, now seen corresponding path program 1 times [2021-04-16 05:25:30,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 05:25:30,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107376673] [2021-04-16 05:25:30,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 05:25:30,604 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-04-16 05:25:30,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87624819] [2021-04-16 05:25:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 05:25:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 05:25:30,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-04-16 05:25:30,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-04-16 05:25:30,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,680 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,680 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,681 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,681 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,682 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,682 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,683 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,683 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,684 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,684 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,686 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,686 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,687 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,687 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,688 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,688 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,689 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,689 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,690 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,690 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,691 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 05:25:30,697 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,697 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 05:25:30,698 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 05:25:30,699 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 05:25:30,700 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 05:25:30,702 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 05:25:30,702 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-04-16 05:25:30,703 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-04-16 05:25:30,704 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,709 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,710 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,711 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,712 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,712 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,713 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 05:25:30,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,714 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 05:25:30,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 05:25:30,716 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 05:25:30,717 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 05:25:30,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-04-16 05:25:30,722 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,730 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,730 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 05:25:30,747 INFO L142 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-04-16 05:25:30,747 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,748 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,749 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,749 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,754 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,754 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,755 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,757 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,758 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,759 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,760 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,760 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 05:25:30,762 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 05:25:30,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 05:25:30,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107376673] [2021-04-16 05:25:30,763 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-04-16 05:25:30,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87624819] [2021-04-16 05:25:30,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 05:25:30,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-04-16 05:25:30,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994592151] [2021-04-16 05:25:30,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-04-16 05:25:30,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-04-16 05:25:30,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-04-16 05:25:30,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 05:25:30,764 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) [2021-04-16 05:25:30,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 05:25:30,770 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2021-04-16 05:25:30,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-04-16 05:25:30,770 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 [2021-04-16 05:25:30,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 05:25:30,772 INFO L225 Difference]: With dead ends: 25 [2021-04-16 05:25:30,772 INFO L226 Difference]: Without dead ends: 25 [2021-04-16 05:25:30,772 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-04-16 05:25:30,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-04-16 05:25:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-04-16 05:25:30,774 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) [2021-04-16 05:25:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-04-16 05:25:30,774 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2021-04-16 05:25:30,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 05:25:30,774 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-04-16 05:25:30,774 INFO L481 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) [2021-04-16 05:25:30,775 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-04-16 05:25:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-04-16 05:25:30,775 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 05:25:30,775 INFO L519 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 05:25:30,990 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 05:25:30,991 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 05:25:30,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 05:25:30,991 INFO L82 PathProgramCache]: Analyzing trace with hash -264482511, now seen corresponding path program 1 times [2021-04-16 05:25:30,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-04-16 05:25:30,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933590133] [2021-04-16 05:25:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 05:25:31,007 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-04-16 05:25:31,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753897673] [2021-04-16 05:25:31,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 05:25:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 05:25:31,041 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 05:25:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 05:25:31,052 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 05:25:31,074 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-04-16 05:25:31,074 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 05:25:31,288 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-04-16 05:25:31,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 05:25:31 BasicIcfg [2021-04-16 05:25:31,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 05:25:31,306 INFO L168 Benchmark]: Toolchain (without parser) took 2005.93 ms. Allocated memory is still 201.3 MB. Free memory was 167.5 MB in the beginning and 72.0 MB in the end (delta: 95.5 MB). Peak memory consumption was 95.4 MB. Max. memory is 8.0 GB. [2021-04-16 05:25:31,306 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 201.3 MB. Free memory is still 184.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 05:25:31,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.50 ms. Allocated memory is still 201.3 MB. Free memory was 167.3 MB in the beginning and 157.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 05:25:31,307 INFO L168 Benchmark]: Boogie Preprocessor took 58.88 ms. Allocated memory is still 201.3 MB. Free memory was 157.6 MB in the beginning and 185.2 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-04-16 05:25:31,307 INFO L168 Benchmark]: RCFGBuilder took 225.85 ms. Allocated memory is still 201.3 MB. Free memory was 185.2 MB in the beginning and 170.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 05:25:31,307 INFO L168 Benchmark]: IcfgTransformer took 15.54 ms. Allocated memory is still 201.3 MB. Free memory was 170.5 MB in the beginning and 169.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 05:25:31,307 INFO L168 Benchmark]: TraceAbstraction took 1519.02 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 72.0 MB in the end (delta: 97.0 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. [2021-04-16 05:25:31,308 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 201.3 MB. Free memory is still 184.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 178.50 ms. Allocated memory is still 201.3 MB. Free memory was 167.3 MB in the beginning and 157.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 58.88 ms. Allocated memory is still 201.3 MB. Free memory was 157.6 MB in the beginning and 185.2 MB in the end (delta: -27.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 225.85 ms. Allocated memory is still 201.3 MB. Free memory was 185.2 MB in the beginning and 170.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 15.54 ms. Allocated memory is still 201.3 MB. Free memory was 170.5 MB in the beginning and 169.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1519.02 ms. Allocated memory is still 201.3 MB. Free memory was 169.0 MB in the beginning and 72.0 MB in the end (delta: 97.0 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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)=16, counter=0] [L24] unsigned int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_unsigned_int() [L27] k = __VERIFIER_nondet_unsigned_int() [L29] x = 1 [L30] y = z [L31] c = 1 VAL [\old(counter)=0, c=1, counter=0, x=1, y=0, z=0] [L33] EXPR counter++ VAL [\old(counter)=0, c=1, counter=1, counter++=0, x=1, y=0, z=0] [L33] COND TRUE counter++<5 [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, x=1, y=0, z=0] [L36] COND TRUE !(c < k) VAL [\old(counter)=0, c=1, counter=1, k=4294967297, x=1, y=0, z=0] [L45] x = x * (z - 1) VAL [\old(counter)=0, c=1, counter=1, k=4294967297, 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. VerificationResult: UNSAFE, OverallTime: 1456.5ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 7.2ms, AutomataDifference: 119.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 57 SDtfs, 13 SDslu, 79 SDs, 0 SdLazy, 41 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.3ms Time, 0.0ms 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, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.6ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.0ms SsaConstructionTime, 70.7ms SatisfiabilityAnalysisTime, 287.0ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 107 SizeOfPredicates, 2 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 15 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! Received shutdown request...