/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:35,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:35,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:35,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:35,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:35,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:35,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:35,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:35,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:35,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:35,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:35,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:35,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:35,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:35,760 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:35,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:35,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:35,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:35,782 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:35,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:35,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:35,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:35,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:35,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:35,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:35,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:35,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:35,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:35,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:35,824 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:35,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:35,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:35,826 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:35,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:35,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:35,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:35,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:35,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:35,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:35,827 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:35,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:35,828 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:35,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:35,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:35,828 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:35,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:35,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:35,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:35,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:35,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:35,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:35,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:36,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:36,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:36,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:36,221 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:36,222 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:36,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2021-02-23 18:46:36,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0328d5a58/6a9d30b4677840fe9ce432d4d59efd37/FLAGd1bfba5ae [2021-02-23 18:46:36,927 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:36,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c [2021-02-23 18:46:36,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0328d5a58/6a9d30b4677840fe9ce432d4d59efd37/FLAGd1bfba5ae [2021-02-23 18:46:37,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0328d5a58/6a9d30b4677840fe9ce432d4d59efd37 [2021-02-23 18:46:37,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:37,312 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:37,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:37,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:37,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:37,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a33798c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37, skipping insertion in model container [2021-02-23 18:46:37,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:37,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:37,504 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c[399,412] [2021-02-23 18:46:37,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:37,540 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:37,556 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c[399,412] [2021-02-23 18:46:37,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:37,586 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:37,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37 WrapperNode [2021-02-23 18:46:37,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:37,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:37,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:37,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:37,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (1/1) ... [2021-02-23 18:46:37,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:37,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:37,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:37,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:37,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (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 [2021-02-23 18:46:37,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:37,767 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:37,768 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:37,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:37,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:37,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:37,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:37,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:37,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:38,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:38,484 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:38,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:38 BoogieIcfgContainer [2021-02-23 18:46:38,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:38,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:38,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:38,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:38,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:37" (1/3) ... [2021-02-23 18:46:38,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3177ad77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:38, skipping insertion in model container [2021-02-23 18:46:38,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:37" (2/3) ... [2021-02-23 18:46:38,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3177ad77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:38, skipping insertion in model container [2021-02-23 18:46:38,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:38" (3/3) ... [2021-02-23 18:46:38,503 INFO L111 eAbstractionObserver]: Analyzing ICFG skippedu.c [2021-02-23 18:46:38,510 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:38,516 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:38,537 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:38,574 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:38,575 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:38,575 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:38,575 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:38,575 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:38,575 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:38,576 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:38,576 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:38,599 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2021-02-23 18:46:38,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:46:38,611 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:38,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:38,612 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:38,621 INFO L82 PathProgramCache]: Analyzing trace with hash -658052109, now seen corresponding path program 1 times [2021-02-23 18:46:38,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:38,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548756044] [2021-02-23 18:46:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:38,733 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:38,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:38,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:38,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,037 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 18:46:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,050 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:39,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548756044] [2021-02-23 18:46:39,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:39,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:39,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013580254] [2021-02-23 18:46:39,068 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:39,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:39,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:39,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:39,085 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2021-02-23 18:46:39,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:39,313 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2021-02-23 18:46:39,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:39,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:46:39,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:39,324 INFO L225 Difference]: With dead ends: 114 [2021-02-23 18:46:39,324 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 18:46:39,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:39,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 18:46:39,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 18:46:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 18:46:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-02-23 18:46:39,387 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 38 [2021-02-23 18:46:39,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:39,388 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-02-23 18:46:39,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:39,389 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-02-23 18:46:39,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:46:39,411 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:39,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:39,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:39,412 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:39,413 INFO L82 PathProgramCache]: Analyzing trace with hash 662856542, now seen corresponding path program 1 times [2021-02-23 18:46:39,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:39,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954795597] [2021-02-23 18:46:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:39,417 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,497 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:39,519 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,520 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:39,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,532 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-23 18:46:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:39,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:39,598 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:39,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954795597] [2021-02-23 18:46:39,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:39,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:46:39,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272397338] [2021-02-23 18:46:39,606 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:46:39,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:39,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:46:39,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:46:39,607 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2021-02-23 18:46:39,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:39,961 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-02-23 18:46:39,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:46:39,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-23 18:46:39,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:39,966 INFO L225 Difference]: With dead ends: 111 [2021-02-23 18:46:39,966 INFO L226 Difference]: Without dead ends: 76 [2021-02-23 18:46:39,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-23 18:46:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2021-02-23 18:46:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-23 18:46:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-02-23 18:46:39,991 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 38 [2021-02-23 18:46:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:39,991 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-02-23 18:46:39,991 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:46:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-02-23 18:46:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-23 18:46:39,994 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:39,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:39,995 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:39,995 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:39,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:39,996 INFO L82 PathProgramCache]: Analyzing trace with hash 625907712, now seen corresponding path program 1 times [2021-02-23 18:46:39,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:39,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041339504] [2021-02-23 18:46:39,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:40,028 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:40,034 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,148 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:40,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:40,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:40,173 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 18:46:40,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-02-23 18:46:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,234 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,235 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:40,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041339504] [2021-02-23 18:46:40,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:40,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:46:40,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596257720] [2021-02-23 18:46:40,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:46:40,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:40,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:46:40,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:46:40,243 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 7 states. [2021-02-23 18:46:40,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:40,635 INFO L93 Difference]: Finished difference Result 115 states and 125 transitions. [2021-02-23 18:46:40,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 18:46:40,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2021-02-23 18:46:40,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:40,637 INFO L225 Difference]: With dead ends: 115 [2021-02-23 18:46:40,637 INFO L226 Difference]: Without dead ends: 80 [2021-02-23 18:46:40,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:46:40,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-02-23 18:46:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 72. [2021-02-23 18:46:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-02-23 18:46:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2021-02-23 18:46:40,668 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 45 [2021-02-23 18:46:40,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:40,669 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2021-02-23 18:46:40,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:46:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2021-02-23 18:46:40,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 18:46:40,671 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:40,671 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:40,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:46:40,671 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:40,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:40,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1013036770, now seen corresponding path program 2 times [2021-02-23 18:46:40,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:40,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653990579] [2021-02-23 18:46:40,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:40,682 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:40,685 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,826 WARN L141 QuantifierPusher]: treesize reduction 56, result has 5.1 percent of original size [2021-02-23 18:46:40,827 WARN L147 QuantifierPusher]: treesize reduction 56, result has 5.1 percent of original size 3 [2021-02-23 18:46:40,835 WARN L141 QuantifierPusher]: treesize reduction 61, result has 29.1 percent of original size [2021-02-23 18:46:40,837 WARN L147 QuantifierPusher]: treesize reduction 61, result has 29.1 percent of original size 25 [2021-02-23 18:46:40,860 WARN L141 QuantifierPusher]: treesize reduction 63, result has 30.8 percent of original size [2021-02-23 18:46:40,861 WARN L147 QuantifierPusher]: treesize reduction 63, result has 30.8 percent of original size 28 [2021-02-23 18:46:40,892 WARN L141 QuantifierPusher]: treesize reduction 49, result has 50.0 percent of original size [2021-02-23 18:46:40,895 WARN L147 QuantifierPusher]: treesize reduction 49, result has 50.0 percent of original size 49 [2021-02-23 18:46:40,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-02-23 18:46:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:40,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:40,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:40,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653990579] [2021-02-23 18:46:40,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:40,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:46:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814100655] [2021-02-23 18:46:40,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:46:40,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:40,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:46:40,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:40,962 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 6 states. [2021-02-23 18:46:41,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:41,214 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2021-02-23 18:46:41,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:46:41,215 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2021-02-23 18:46:41,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:41,216 INFO L225 Difference]: With dead ends: 99 [2021-02-23 18:46:41,216 INFO L226 Difference]: Without dead ends: 85 [2021-02-23 18:46:41,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:46:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-02-23 18:46:41,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 73. [2021-02-23 18:46:41,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-23 18:46:41,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-23 18:46:41,233 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 52 [2021-02-23 18:46:41,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:41,233 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-23 18:46:41,233 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:46:41,233 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-23 18:46:41,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:46:41,235 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:41,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:46:41,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:46:41,235 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:41,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:41,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1133251318, now seen corresponding path program 1 times [2021-02-23 18:46:41,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:41,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537325188] [2021-02-23 18:46:41,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:41,244 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:41,246 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:41,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:41,307 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:41,337 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:41,375 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:46:41,375 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:41,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 18:46:41,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:41 BoogieIcfgContainer [2021-02-23 18:46:41,404 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:41,411 INFO L168 Benchmark]: Toolchain (without parser) took 4103.64 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 126.7 MB in the beginning and 101.7 MB in the end (delta: 25.0 MB). Peak memory consumption was 69.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:41,412 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:41,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.66 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:41,414 INFO L168 Benchmark]: Boogie Preprocessor took 46.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:41,417 INFO L168 Benchmark]: RCFGBuilder took 852.47 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 126.4 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:41,424 INFO L168 Benchmark]: TraceAbstraction took 2911.31 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 125.9 MB in the beginning and 101.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:41,430 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.66 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.57 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 852.47 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 126.4 MB in the end (delta: -13.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2911.31 ms. Allocated memory was 151.0 MB in the beginning and 195.0 MB in the end (delta: 44.0 MB). Free memory was 125.9 MB in the beginning and 101.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 68.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int SIZE; [L14] const int MAX = 100000; [L18] SIZE = __VERIFIER_nondet_int() [L19] COND TRUE SIZE > 1 && SIZE < MAX [L21] int i; [L22] int *a = malloc(sizeof(int)*SIZE); [L24] i = 0 [L24] COND TRUE i < SIZE [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ [L24] COND TRUE i < SIZE [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ [L24] COND FALSE !(i < SIZE) [L29] COND FALSE !(SIZE % 2 != 0) [L31] CALL assume_abort_if_not(SIZE % 2 == 0) [L6] COND FALSE !(!cond) [L31] RET assume_abort_if_not(SIZE % 2 == 0) [L32] i = 1 [L32] COND TRUE i <= SIZE/2 [L34] EXPR a[2*i-2] [L34] COND FALSE !(a[2*i-2] > i) [L38] EXPR a[2*i-1] [L38] COND FALSE !(a[2*i-1] > i) [L32] i++ [L32] COND FALSE !(i <= SIZE/2) [L44] i = 0 [L44] COND TRUE i < SIZE [L46] EXPR a[i] [L46] CALL __VERIFIER_assert( a[i] <= i ) [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 227 SDtfs, 278 SDslu, 146 SDs, 0 SdLazy, 462 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...