/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/indp5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:15:53,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:15:53,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:15:54,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:15:54,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:15:54,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:15:54,080 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:15:54,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:15:54,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:15:54,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:15:54,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:15:54,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:15:54,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:15:54,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:15:54,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:15:54,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:15:54,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 00:15:54,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:15:54,136 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:15:54,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:15:54,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:15:54,139 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:15:54,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:15:54,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:15:54,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:15:54,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:15:54,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:15:54,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:15:54,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:15:54,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:15:54,141 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:15:54,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:15:54,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:15:54,141 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:15:54,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:15:54,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:15:54,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:15:54,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:15:54,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:15:54,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:15:54,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:15:54,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:15:54,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:15:54,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:15:54,565 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:15:54,568 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:15:54,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2021-02-24 00:15:54,652 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9009123c/a800a17e325e4ef8ae873f7da739484a/FLAGfc8005417 [2021-02-24 00:15:55,329 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:15:55,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2021-02-24 00:15:55,338 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9009123c/a800a17e325e4ef8ae873f7da739484a/FLAGfc8005417 [2021-02-24 00:15:55,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9009123c/a800a17e325e4ef8ae873f7da739484a [2021-02-24 00:15:55,357 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:15:55,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:15:55,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:55,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:15:55,377 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:15:55,378 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2056aaed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55, skipping insertion in model container [2021-02-24 00:15:55,380 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:15:55,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:15:55,561 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/indp5f.c[589,602] [2021-02-24 00:15:55,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:55,594 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:15:55,610 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/indp5f.c[589,602] [2021-02-24 00:15:55,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:15:55,644 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:15:55,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55 WrapperNode [2021-02-24 00:15:55,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:15:55,647 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:15:55,647 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:15:55,647 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:15:55,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (1/1) ... [2021-02-24 00:15:55,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:15:55,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:15:55,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:15:55,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:15:55,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (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 [2021-02-24 00:15:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:15:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:15:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:15:55,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:15:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:15:55,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:15:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:15:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:15:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:15:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:15:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:15:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:15:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:15:55,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:15:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:15:55,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:15:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:15:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:15:55,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:15:56,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:15:56,572 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-24 00:15:56,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:56 BoogieIcfgContainer [2021-02-24 00:15:56,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:15:56,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:15:56,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:15:56,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:15:56,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:15:55" (1/3) ... [2021-02-24 00:15:56,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c817ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:56, skipping insertion in model container [2021-02-24 00:15:56,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:15:55" (2/3) ... [2021-02-24 00:15:56,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c817ed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:15:56, skipping insertion in model container [2021-02-24 00:15:56,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:15:56" (3/3) ... [2021-02-24 00:15:56,584 INFO L111 eAbstractionObserver]: Analyzing ICFG indp5f.c [2021-02-24 00:15:56,591 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:15:56,597 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:15:56,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:15:56,643 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:15:56,643 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:15:56,644 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:15:56,644 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:15:56,644 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:15:56,644 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:15:56,644 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:15:56,644 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:15:56,662 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-24 00:15:56,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:15:56,674 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:56,675 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] [2021-02-24 00:15:56,675 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:56,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:56,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1100068675, now seen corresponding path program 1 times [2021-02-24 00:15:56,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:56,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736230177] [2021-02-24 00:15:56,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:56,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:56,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:56,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:56,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:56,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:56,987 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:56,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:56,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:56,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:57,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736230177] [2021-02-24 00:15:57,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:57,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:15:57,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990972463] [2021-02-24 00:15:57,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:15:57,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:57,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:15:57,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:15:57,036 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-24 00:15:57,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:57,345 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2021-02-24 00:15:57,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:15:57,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-24 00:15:57,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:57,357 INFO L225 Difference]: With dead ends: 149 [2021-02-24 00:15:57,357 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 00:15:57,361 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 [2021-02-24 00:15:57,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 00:15:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-24 00:15:57,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-24 00:15:57,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-24 00:15:57,425 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 42 [2021-02-24 00:15:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:57,426 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-24 00:15:57,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:15:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-24 00:15:57,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:15:57,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:57,429 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] [2021-02-24 00:15:57,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:15:57,429 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:57,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:57,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1086735486, now seen corresponding path program 1 times [2021-02-24 00:15:57,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:57,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [842017555] [2021-02-24 00:15:57,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:57,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:15:57,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:15:57,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,632 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:15:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:15:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:15:57,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:15:57,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:15:57,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:15:57,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [842017555] [2021-02-24 00:15:57,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:15:57,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:15:57,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980575131] [2021-02-24 00:15:57,694 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:15:57,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:15:57,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:15:57,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:15:57,696 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-24 00:15:57,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:15:57,994 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-02-24 00:15:57,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:15:57,995 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-24 00:15:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:15:57,997 INFO L225 Difference]: With dead ends: 143 [2021-02-24 00:15:57,998 INFO L226 Difference]: Without dead ends: 103 [2021-02-24 00:15:57,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-24 00:15:58,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-24 00:15:58,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2021-02-24 00:15:58,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-24 00:15:58,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-24 00:15:58,017 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 42 [2021-02-24 00:15:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:15:58,018 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-24 00:15:58,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:15:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-24 00:15:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-24 00:15:58,021 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:15:58,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:15:58,021 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:15:58,022 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:15:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:15:58,022 INFO L82 PathProgramCache]: Analyzing trace with hash -405046525, now seen corresponding path program 1 times [2021-02-24 00:15:58,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:15:58,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854563710] [2021-02-24 00:15:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:15:58,044 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-24 00:15:58,044 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-24 00:15:58,045 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:15:58,050 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:15:58,072 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-24 00:15:58,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:15:58 BoogieIcfgContainer [2021-02-24 00:15:58,073 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:15:58,075 INFO L168 Benchmark]: Toolchain (without parser) took 2714.98 ms. Allocated memory is still 152.0 MB. Free memory was 127.8 MB in the beginning and 84.5 MB in the end (delta: 43.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,076 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:15:58,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.76 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 116.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,081 INFO L168 Benchmark]: Boogie Preprocessor took 48.05 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,082 INFO L168 Benchmark]: RCFGBuilder took 878.71 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 124.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,085 INFO L168 Benchmark]: TraceAbstraction took 1497.25 ms. Allocated memory is still 152.0 MB. Free memory was 123.4 MB in the beginning and 84.5 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:15:58,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.76 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 116.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.05 ms. Allocated memory is still 152.0 MB. Free memory was 116.5 MB in the beginning and 114.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 878.71 ms. Allocated memory is still 152.0 MB. Free memory was 114.8 MB in the beginning and 124.0 MB in the end (delta: -9.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1497.25 ms. Allocated memory is still 152.0 MB. Free memory was 123.4 MB in the beginning and 84.5 MB in the end (delta: 39.0 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L29] long long sum[1]; [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i