/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:07:34,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:07:34,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:07:34,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 06:07:34,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:07:34,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:07:34,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:07:34,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:07:34,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:07:34,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:07:34,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:07:34,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:07:34,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:07:34,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:07:34,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:07:34,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:07:34,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:07:34,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:07:34,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:07:34,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:07:34,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:07:34,617 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:07:34,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:07:34,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:07:34,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:07:34,621 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:07:34,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:07:34,621 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:07:34,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:07:34,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:07:34,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:07:34,622 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:07:34,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:07:34,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:07:34,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:07:34,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:07:34,637 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:07:34,650 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:07:35,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:07:35,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:07:35,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:07:35,033 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:07:35,033 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:07:35,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2021-05-06 06:07:35,081 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ceb64fe7/caa49f9f5eff43fab1f75cfc57bf1156/FLAG5e5b88f11 [2021-05-06 06:07:35,480 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:07:35,480 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c [2021-05-06 06:07:35,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ceb64fe7/caa49f9f5eff43fab1f75cfc57bf1156/FLAG5e5b88f11 [2021-05-06 06:07:35,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ceb64fe7/caa49f9f5eff43fab1f75cfc57bf1156 [2021-05-06 06:07:35,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:07:35,501 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:07:35,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:07:35,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:07:35,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:07:35,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4d9c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35, skipping insertion in model container [2021-05-06 06:07:35,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:07:35,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:07:35,658 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c[2239,2252] [2021-05-06 06:07:35,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:07:35,667 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:07:35,719 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+lhb-reducer.c[2239,2252] [2021-05-06 06:07:35,721 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:07:35,733 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:07:35,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35 WrapperNode [2021-05-06 06:07:35,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:07:35,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:07:35,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:07:35,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:07:35,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... [2021-05-06 06:07:35,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:07:35,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:07:35,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:07:35,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:07:35,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:07:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:07:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:07:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:07:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:07:35,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:07:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:07:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:07:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:07:35,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:07:35,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:07:35,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:07:44,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:07:44,785 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 06:07:44,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:07:44 BoogieIcfgContainer [2021-05-06 06:07:44,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:07:44,786 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:07:44,786 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:07:44,787 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:07:44,789 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:07:44" (1/1) ... [2021-05-06 06:07:44,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:07:44 BasicIcfg [2021-05-06 06:07:44,799 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:07:44,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:07:44,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:07:44,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:07:44,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:07:35" (1/4) ... [2021-05-06 06:07:44,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2197c303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:07:44, skipping insertion in model container [2021-05-06 06:07:44,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:07:35" (2/4) ... [2021-05-06 06:07:44,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2197c303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:07:44, skipping insertion in model container [2021-05-06 06:07:44,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:07:44" (3/4) ... [2021-05-06 06:07:44,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2197c303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:07:44, skipping insertion in model container [2021-05-06 06:07:44,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:07:44" (4/4) ... [2021-05-06 06:07:44,804 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.c.v+lhb-reducer.cJordan [2021-05-06 06:07:44,807 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:07:44,811 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:07:44,821 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:07:44,840 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:07:44,840 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:07:44,840 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:07:44,840 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:07:44,840 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:07:44,841 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:07:44,841 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:07:44,841 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:07:44,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 06:07:44,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:07:44,857 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:07:44,857 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:07:44,857 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:07:44,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:07:44,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1219544613, now seen corresponding path program 1 times [2021-05-06 06:07:44,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:07:44,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334632510] [2021-05-06 06:07:44,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:07:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:07:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:07:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:07:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:07:45,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:07:45,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334632510] [2021-05-06 06:07:45,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334632510] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:07:45,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:07:45,285 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 06:07:45,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632236898] [2021-05-06 06:07:45,289 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 06:07:45,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:07:45,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 06:07:45,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:07:45,299 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:08:05,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:05,057 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2021-05-06 06:08:05,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 06:08:05,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-06 06:08:05,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:05,063 INFO L225 Difference]: With dead ends: 49 [2021-05-06 06:08:05,064 INFO L226 Difference]: Without dead ends: 35 [2021-05-06 06:08:05,064 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 126.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:08:05,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-06 06:08:05,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2021-05-06 06:08:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:08:05,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-05-06 06:08:05,116 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 15 [2021-05-06 06:08:05,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:05,116 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-05-06 06:08:05,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:08:05,117 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-05-06 06:08:05,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 06:08:05,117 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:08:05,117 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:08:05,117 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:08:05,118 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:08:05,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:08:05,118 INFO L82 PathProgramCache]: Analyzing trace with hash -791971888, now seen corresponding path program 1 times [2021-05-06 06:08:05,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:08:05,118 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523278493] [2021-05-06 06:08:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:08:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:08:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:08:05,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:08:05,378 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:08:05,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523278493] [2021-05-06 06:08:05,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523278493] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:08:05,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:08:05,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 06:08:05,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767642778] [2021-05-06 06:08:05,380 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 06:08:05,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:08:05,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 06:08:05,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:08:05,381 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:08:25,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:08:25,017 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2021-05-06 06:08:25,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:08:25,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-06 06:08:25,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:08:25,018 INFO L225 Difference]: With dead ends: 32 [2021-05-06 06:08:25,018 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:08:25,018 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 101.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:08:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:08:25,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:08:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:08:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:08:25,019 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-05-06 06:08:25,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:08:25,019 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:08:25,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:08:25,019 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:08:25,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:08:25,020 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 06:08:25,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:08:25 BasicIcfg [2021-05-06 06:08:25,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:08:25,023 INFO L168 Benchmark]: Toolchain (without parser) took 49522.63 ms. Allocated memory is still 175.1 MB. Free memory was 140.8 MB in the beginning and 94.0 MB in the end (delta: 46.8 MB). Peak memory consumption was 46.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:25,024 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 175.1 MB. Free memory is still 157.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:08:25,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.55 ms. Allocated memory is still 175.1 MB. Free memory was 140.6 MB in the beginning and 158.3 MB in the end (delta: -17.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:25,024 INFO L168 Benchmark]: Boogie Preprocessor took 32.55 ms. Allocated memory is still 175.1 MB. Free memory was 158.3 MB in the beginning and 156.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:25,025 INFO L168 Benchmark]: RCFGBuilder took 9018.61 ms. Allocated memory is still 175.1 MB. Free memory was 156.5 MB in the beginning and 138.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:25,025 INFO L168 Benchmark]: IcfgTransformer took 12.66 ms. Allocated memory is still 175.1 MB. Free memory was 138.6 MB in the beginning and 137.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:25,025 INFO L168 Benchmark]: TraceAbstraction took 40222.69 ms. Allocated memory is still 175.1 MB. Free memory was 136.9 MB in the beginning and 94.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2021-05-06 06:08:25,027 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 175.1 MB. Free memory is still 157.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 229.55 ms. Allocated memory is still 175.1 MB. Free memory was 140.6 MB in the beginning and 158.3 MB in the end (delta: -17.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.55 ms. Allocated memory is still 175.1 MB. Free memory was 158.3 MB in the beginning and 156.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 9018.61 ms. Allocated memory is still 175.1 MB. Free memory was 156.5 MB in the beginning and 138.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 12.66 ms. Allocated memory is still 175.1 MB. Free memory was 138.6 MB in the beginning and 137.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 40222.69 ms. Allocated memory is still 175.1 MB. Free memory was 136.9 MB in the beginning and 94.0 MB in the end (delta: 42.9 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 99]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 40182.1ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.2ms, AutomataDifference: 39413.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 58 SDtfs, 26 SDslu, 73 SDs, 0 SdLazy, 119 SolverSat, 7 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 36245.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 228.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=1, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 9.9ms SsaConstructionTime, 112.5ms SatisfiabilityAnalysisTime, 516.1ms InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 469 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...