/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-fpi/s5iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:31,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:31,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:31,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:47:31,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:47:31,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:47:31,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:47:31,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:47:31,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:47:31,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:47:31,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:47:31,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:47:31,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:31,682 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:31,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:31,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:31,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:31,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:31,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:31,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:31,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:31,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:31,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:31,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:31,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:31,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:31,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:31,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:31,767 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 18:47:31,793 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:31,793 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:31,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:31,798 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:31,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:31,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:31,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:31,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:31,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:31,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:31,801 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:31,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:31,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:31,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:31,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:31,803 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:31,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:31,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:31,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:31,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:31,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:31,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:31,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:32,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:32,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:32,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:32,283 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:32,284 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:32,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s5iff.c [2021-02-23 18:47:32,373 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d628762f5/00d10e8dfcf842d091a29a3503f4a500/FLAG1179e46d6 [2021-02-23 18:47:33,036 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:33,037 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s5iff.c [2021-02-23 18:47:33,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d628762f5/00d10e8dfcf842d091a29a3503f4a500/FLAG1179e46d6 [2021-02-23 18:47:33,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d628762f5/00d10e8dfcf842d091a29a3503f4a500 [2021-02-23 18:47:33,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:33,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:33,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:33,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:33,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:33,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1037daeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33, skipping insertion in model container [2021-02-23 18:47:33,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:33,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:33,706 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-fpi/s5iff.c[588,601] [2021-02-23 18:47:33,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:33,745 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:33,761 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-fpi/s5iff.c[588,601] [2021-02-23 18:47:33,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:33,799 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:33,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33 WrapperNode [2021-02-23 18:47:33,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:33,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:33,801 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:33,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:33,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (1/1) ... [2021-02-23 18:47:33,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:33,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:33,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:33,843 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:33,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (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 18:47:33,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:33,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:33,952 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:33,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:33,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:33,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:33,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:33,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:33,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:34,379 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:34,380 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:47:34,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:34 BoogieIcfgContainer [2021-02-23 18:47:34,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:34,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:34,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:34,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:34,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:33" (1/3) ... [2021-02-23 18:47:34,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d7a072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:34, skipping insertion in model container [2021-02-23 18:47:34,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:33" (2/3) ... [2021-02-23 18:47:34,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69d7a072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:34, skipping insertion in model container [2021-02-23 18:47:34,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:34" (3/3) ... [2021-02-23 18:47:34,391 INFO L111 eAbstractionObserver]: Analyzing ICFG s5iff.c [2021-02-23 18:47:34,399 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:34,403 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:34,424 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:34,449 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:34,449 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:34,449 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:34,450 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:34,450 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:34,450 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:34,450 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:34,450 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-23 18:47:34,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:47:34,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:34,479 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] [2021-02-23 18:47:34,479 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:34,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:34,486 INFO L82 PathProgramCache]: Analyzing trace with hash 137751759, now seen corresponding path program 1 times [2021-02-23 18:47:34,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:34,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247819651] [2021-02-23 18:47:34,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:34,574 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:34,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:34,737 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,738 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:34,820 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:34,841 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:34,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:34,854 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 18:47:34,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247819651] [2021-02-23 18:47:34,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:34,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:34,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104050367] [2021-02-23 18:47:34,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:34,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:34,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:34,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:34,880 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-23 18:47:35,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:35,037 INFO L93 Difference]: Finished difference Result 119 states and 132 transitions. [2021-02-23 18:47:35,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:35,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2021-02-23 18:47:35,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:35,046 INFO L225 Difference]: With dead ends: 119 [2021-02-23 18:47:35,047 INFO L226 Difference]: Without dead ends: 58 [2021-02-23 18:47:35,050 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 18:47:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-02-23 18:47:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-02-23 18:47:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-02-23 18:47:35,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-02-23 18:47:35,101 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 36 [2021-02-23 18:47:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:35,101 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-02-23 18:47:35,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:35,102 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-02-23 18:47:35,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-23 18:47:35,103 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:35,104 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] [2021-02-23 18:47:35,104 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:35,104 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1632327928, now seen corresponding path program 1 times [2021-02-23 18:47:35,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:35,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572783615] [2021-02-23 18:47:35,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:35,115 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:35,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:35,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:35,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:35,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:35,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:35,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:35,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:35,290 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:35,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:35,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:35,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:35,365 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:35,369 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 18:47:35,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572783615] [2021-02-23 18:47:35,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:35,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:35,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302694848] [2021-02-23 18:47:35,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:35,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:35,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:35,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:35,374 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 5 states. [2021-02-23 18:47:35,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:35,602 INFO L93 Difference]: Finished difference Result 104 states and 110 transitions. [2021-02-23 18:47:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:35,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2021-02-23 18:47:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:35,605 INFO L225 Difference]: With dead ends: 104 [2021-02-23 18:47:35,605 INFO L226 Difference]: Without dead ends: 79 [2021-02-23 18:47:35,606 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 18:47:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-02-23 18:47:35,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 60. [2021-02-23 18:47:35,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2021-02-23 18:47:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2021-02-23 18:47:35,621 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 36 [2021-02-23 18:47:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:35,622 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2021-02-23 18:47:35,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2021-02-23 18:47:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-23 18:47:35,624 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:35,624 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:35,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:35,624 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:35,625 INFO L82 PathProgramCache]: Analyzing trace with hash -881259695, now seen corresponding path program 1 times [2021-02-23 18:47:35,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:35,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289904383] [2021-02-23 18:47:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:35,654 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:35,659 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:35,720 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:35,745 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:35,781 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:35,782 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:35,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:35,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:35 BoogieIcfgContainer [2021-02-23 18:47:35,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:35,803 INFO L168 Benchmark]: Toolchain (without parser) took 2379.87 ms. Allocated memory is still 153.1 MB. Free memory was 130.1 MB in the beginning and 118.6 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,803 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:35,804 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.13 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 119.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,805 INFO L168 Benchmark]: Boogie Preprocessor took 40.17 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,806 INFO L168 Benchmark]: RCFGBuilder took 539.75 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 129.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,806 INFO L168 Benchmark]: TraceAbstraction took 1417.67 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 118.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:35,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 360.13 ms. Allocated memory is still 153.1 MB. Free memory was 128.9 MB in the beginning and 119.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.17 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 539.75 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 129.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1417.67 ms. Allocated memory is still 153.1 MB. Free memory was 128.6 MB in the beginning and 118.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i