/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-03 00:29:07,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-03 00:29:07,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-03 00:29:07,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-03 00:29:07,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-03 00:29:07,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-03 00:29:07,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-03 00:29:07,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-03 00:29:07,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-03 00:29:07,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-03 00:29:07,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-03 00:29:07,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-03 00:29:07,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-03 00:29:07,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-03 00:29:07,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-03 00:29:07,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-03 00:29:07,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-03 00:29:07,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-03 00:29:07,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-03 00:29:07,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-03 00:29:07,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-03 00:29:07,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-03 00:29:07,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-03 00:29:07,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-03 00:29:07,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-03 00:29:07,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-03 00:29:07,619 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-03 00:29:07,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-03 00:29:07,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-03 00:29:07,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-03 00:29:07,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-03 00:29:07,624 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-03 00:29:07,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-03 00:29:07,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-03 00:29:07,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-03 00:29:07,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-03 00:29:07,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-03 00:29:07,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-03 00:29:07,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-03 00:29:07,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-03 00:29:07,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-03 00:29:07,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-03 00:29:07,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-03 00:29:07,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-03 00:29:07,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-03 00:29:07,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-03 00:29:07,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-03 00:29:07,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-03 00:29:07,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-03 00:29:07,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-03 00:29:07,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-03 00:29:07,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-03 00:29:07,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-03 00:29:07,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-03 00:29:07,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-03 00:29:07,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-03 00:29:07,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-03 00:29:07,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-03 00:29:07,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-03 00:29:07,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-03 00:29:07,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-03 00:29:07,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-03 00:29:07,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-03 00:29:07,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-03 00:29:07,671 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-03 00:29:07,671 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-03 00:29:08,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-03 00:29:08,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-03 00:29:08,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-03 00:29:08,147 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-03 00:29:08,148 INFO L275 PluginConnector]: CDTParser initialized [2021-05-03 00:29:08,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2021-05-03 00:29:08,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b28031519/b890c63613144b309819a53e1721ddfd/FLAGec214e108 [2021-05-03 00:29:09,002 INFO L306 CDTParser]: Found 1 translation units. [2021-05-03 00:29:09,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2021-05-03 00:29:09,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b28031519/b890c63613144b309819a53e1721ddfd/FLAGec214e108 [2021-05-03 00:29:09,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b28031519/b890c63613144b309819a53e1721ddfd [2021-05-03 00:29:09,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-03 00:29:09,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-03 00:29:09,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-03 00:29:09,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-03 00:29:09,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-03 00:29:09,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311dd9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09, skipping insertion in model container [2021-05-03 00:29:09,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-03 00:29:09,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-03 00:29:09,623 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c[350,363] [2021-05-03 00:29:09,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:29:09,670 INFO L203 MainTranslator]: Completed pre-run [2021-05-03 00:29:09,699 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c[350,363] [2021-05-03 00:29:09,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-03 00:29:09,740 INFO L208 MainTranslator]: Completed translation [2021-05-03 00:29:09,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09 WrapperNode [2021-05-03 00:29:09,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-03 00:29:09,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-03 00:29:09,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-03 00:29:09,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-03 00:29:09,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,813 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (1/1) ... [2021-05-03 00:29:09,816 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-03 00:29:09,817 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-03 00:29:09,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-03 00:29:09,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-03 00:29:09,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (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 [2021-05-03 00:29:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-03 00:29:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-03 00:29:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-03 00:29:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-03 00:29:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-03 00:29:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-03 00:29:09,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-03 00:29:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-03 00:29:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-03 00:29:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-03 00:29:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-03 00:29:09,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-03 00:29:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-03 00:29:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-03 00:29:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-03 00:29:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-03 00:29:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-03 00:29:09,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-03 00:29:10,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-03 00:29:10,306 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-03 00:29:10,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:29:10 BoogieIcfgContainer [2021-05-03 00:29:10,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-03 00:29:10,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-03 00:29:10,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-03 00:29:10,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-03 00:29:10,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 12:29:09" (1/3) ... [2021-05-03 00:29:10,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7b85a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:29:10, skipping insertion in model container [2021-05-03 00:29:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 12:29:09" (2/3) ... [2021-05-03 00:29:10,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f7b85a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 12:29:10, skipping insertion in model container [2021-05-03 00:29:10,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 12:29:10" (3/3) ... [2021-05-03 00:29:10,329 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2021-05-03 00:29:10,335 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-03 00:29:10,364 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-03 00:29:10,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-03 00:29:10,418 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-03 00:29:10,418 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-03 00:29:10,418 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-03 00:29:10,418 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-03 00:29:10,419 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-03 00:29:10,419 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-03 00:29:10,419 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-03 00:29:10,419 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-03 00:29:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-03 00:29:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-03 00:29:10,454 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:29:10,455 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:29:10,456 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:29:10,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:29:10,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1035305623, now seen corresponding path program 1 times [2021-05-03 00:29:10,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:29:10,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679084226] [2021-05-03 00:29:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:29:10,543 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:29:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:10,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:29:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:29:10,834 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:29:10,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679084226] [2021-05-03 00:29:10,836 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1679084226] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:29:10,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:29:10,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-03 00:29:10,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110625420] [2021-05-03 00:29:10,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-03 00:29:10,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:29:10,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-03 00:29:10,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:29:10,863 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-05-03 00:29:10,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:29:10,966 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2021-05-03 00:29:10,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-03 00:29:10,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2021-05-03 00:29:10,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:29:10,980 INFO L225 Difference]: With dead ends: 32 [2021-05-03 00:29:10,980 INFO L226 Difference]: Without dead ends: 13 [2021-05-03 00:29:10,985 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 87.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-03 00:29:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-03 00:29:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-03 00:29:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-05-03 00:29:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-03 00:29:11,036 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-03 00:29:11,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:29:11,037 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-03 00:29:11,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-05-03 00:29:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-03 00:29:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-03 00:29:11,040 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:29:11,040 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:29:11,041 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-03 00:29:11,041 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:29:11,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:29:11,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2042096758, now seen corresponding path program 1 times [2021-05-03 00:29:11,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:29:11,043 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [184467579] [2021-05-03 00:29:11,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:29:11,055 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-03 00:29:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:29:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:11,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:29:11,201 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:29:11,201 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [184467579] [2021-05-03 00:29:11,201 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [184467579] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:29:11,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:29:11,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-03 00:29:11,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076156808] [2021-05-03 00:29:11,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-03 00:29:11,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:29:11,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-03 00:29:11,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-03 00:29:11,205 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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) [2021-05-03 00:29:11,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:29:11,446 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-03 00:29:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-03 00:29:11,447 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 [2021-05-03 00:29:11,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:29:11,448 INFO L225 Difference]: With dead ends: 20 [2021-05-03 00:29:11,448 INFO L226 Difference]: Without dead ends: 15 [2021-05-03 00:29:11,450 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 213.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-03 00:29:11,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-03 00:29:11,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-03 00:29:11,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-05-03 00:29:11,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-05-03 00:29:11,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-05-03 00:29:11,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:29:11,457 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-05-03 00:29:11,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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) [2021-05-03 00:29:11,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-05-03 00:29:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-03 00:29:11,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-03 00:29:11,459 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-03 00:29:11,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-03 00:29:11,459 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-03 00:29:11,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-03 00:29:11,460 INFO L82 PathProgramCache]: Analyzing trace with hash 615626395, now seen corresponding path program 1 times [2021-05-03 00:29:11,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-03 00:29:11,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243066586] [2021-05-03 00:29:11,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-03 00:29:11,503 INFO L181 rdanLoopAcceleration]: Guard: Formula: (and (<= 0 (+ |v_main_#t~nondet7_7| 2147483648)) (<= |v_main_#t~nondet7_7| 2147483647) (not (= |v_main_#t~nondet7_7| 0))) InVars {main_#t~nondet7=|v_main_#t~nondet7_7|} OutVars{main_#t~nondet7=|v_main_#t~nondet7_7|} AuxVars[] AssignedVars[] [2021-05-03 00:29:11,521 WARN L240 tifierPushTermWalker]: treesize reduction 6, result has 93.3 percent of original size [2021-05-03 00:29:11,573 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:11,587 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-03 00:29:11,611 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-05-03 00:29:11,614 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-05-03 00:29:11,680 WARN L245 tifierPushTermWalker]: treesize reduction 6, result has 93.3 percent of original size 83 [2021-05-03 00:29:11,762 INFO L212 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-05-03 00:29:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-03 00:29:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-03 00:29:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-03 00:29:12,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:29:12,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-03 00:29:12,190 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-03 00:29:12,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243066586] [2021-05-03 00:29:12,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [243066586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-03 00:29:12,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-03 00:29:12,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-03 00:29:12,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747520211] [2021-05-03 00:29:12,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-03 00:29:12,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-03 00:29:12,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-03 00:29:12,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-03 00:29:12,201 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-05-03 00:29:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-03 00:29:12,597 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-05-03 00:29:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-03 00:29:12,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 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 14 [2021-05-03 00:29:12,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-03 00:29:12,599 INFO L225 Difference]: With dead ends: 18 [2021-05-03 00:29:12,600 INFO L226 Difference]: Without dead ends: 0 [2021-05-03 00:29:12,602 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 481.1ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-05-03 00:29:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-03 00:29:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-03 00:29:12,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-03 00:29:12,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-03 00:29:12,603 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-03 00:29:12,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-03 00:29:12,603 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-03 00:29:12,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 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) [2021-05-03 00:29:12,604 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-03 00:29:12,604 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-03 00:29:12,604 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-03 00:29:12,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-03 00:29:12,991 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-03 00:29:12,991 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-03 00:29:12,991 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-03 00:29:12,992 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-05-03 00:29:12,992 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-05-03 00:29:12,992 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-05-03 00:29:12,992 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-05-03 00:29:12,992 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-03 00:29:12,992 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-03 00:29:12,993 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-05-03 00:29:12,993 INFO L201 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-05-03 00:29:12,993 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2021-05-03 00:29:12,993 INFO L201 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-05-03 00:29:12,993 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2021-05-03 00:29:12,993 INFO L194 CegarLoopUtils]: At program point L13-1(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-05-03 00:29:12,993 INFO L194 CegarLoopUtils]: At program point L13-3(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-05-03 00:29:12,994 INFO L194 CegarLoopUtils]: At program point L13-4(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2021-05-03 00:29:12,994 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-05-03 00:29:12,994 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-05-03 00:29:12,994 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (and (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0))) [2021-05-03 00:29:12,994 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (let ((.cse0 (<= 1 __VERIFIER_assert_~cond))) (and (or .cse0 (<= (+ __VERIFIER_assert_~cond 1) 0) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0))) (or .cse0 (not (<= 1 |__VERIFIER_assert_#in~cond|))))) [2021-05-03 00:29:12,994 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-05-03 00:29:12,995 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (and (not (<= 1 |__VERIFIER_assert_#in~cond|)) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0))) [2021-05-03 00:29:13,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.05 12:29:13 BoogieIcfgContainer [2021-05-03 00:29:13,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-03 00:29:13,012 INFO L168 Benchmark]: Toolchain (without parser) took 3646.45 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 163.2 MB in the beginning and 128.3 MB in the end (delta: 34.9 MB). Peak memory consumption was 76.0 MB. Max. memory is 8.0 GB. [2021-05-03 00:29:13,012 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 197.1 MB. Free memory is still 179.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-03 00:29:13,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.10 ms. Allocated memory is still 197.1 MB. Free memory was 162.9 MB in the beginning and 153.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-03 00:29:13,013 INFO L168 Benchmark]: Boogie Preprocessor took 72.02 ms. Allocated memory is still 197.1 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-03 00:29:13,013 INFO L168 Benchmark]: RCFGBuilder took 490.16 ms. Allocated memory is still 197.1 MB. Free memory was 152.2 MB in the beginning and 169.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2021-05-03 00:29:13,014 INFO L168 Benchmark]: TraceAbstraction took 2689.32 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 168.8 MB in the beginning and 128.3 MB in the end (delta: 40.5 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. [2021-05-03 00:29:13,015 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 197.1 MB. Free memory is still 179.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 369.10 ms. Allocated memory is still 197.1 MB. Free memory was 162.9 MB in the beginning and 153.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.02 ms. Allocated memory is still 197.1 MB. Free memory was 153.7 MB in the beginning and 152.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 490.16 ms. Allocated memory is still 197.1 MB. Free memory was 152.2 MB in the beginning and 169.4 MB in the end (delta: -17.3 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2689.32 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 168.8 MB in the beginning and 128.3 MB in the end (delta: 40.5 MB). Peak memory consumption was 81.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2189.7ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 23.0ms, AutomataDifference: 792.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 385.5ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 35 SDslu, 35 SDs, 0 SdLazy, 63 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 151.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 781.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 20 LocationsWithAnnotation, 38 PreInvPairs, 56 NumberOfFragments, 117 HoareAnnotationTreeSize, 38 FomulaSimplifications, 57 FormulaSimplificationTreeSizeReduction, 114.0ms HoareSimplificationTime, 20 FomulaSimplificationsInter, 757 FormulaSimplificationTreeSizeReductionInter, 236.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 2 * (x / 2) + 1 <= x - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...