/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 02:59:05,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 02:59:05,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 02:59:05,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-01 02:59:05,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-01 02:59:05,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-01 02:59:05,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-01 02:59:05,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-01 02:59:05,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-01 02:59:05,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-01 02:59:05,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-01 02:59:05,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-01 02:59:05,426 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 02:59:05,427 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 02:59:05,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 02:59:05,429 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 02:59:05,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 02:59:05,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 02:59:05,432 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 02:59:05,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 02:59:05,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 02:59:05,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 02:59:05,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 02:59:05,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 02:59:05,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 02:59:05,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 02:59:05,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 02:59:05,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 02:59:05,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-01 02:59:05,508 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 02:59:05,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 02:59:05,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 02:59:05,512 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 02:59:05,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 02:59:05,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 02:59:05,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 02:59:05,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 02:59:05,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 02:59:05,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 02:59:05,513 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 02:59:05,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 02:59:05,514 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 02:59:05,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 02:59:05,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 02:59:05,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 02:59:05,515 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 02:59:05,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 02:59:05,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 02:59:05,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 02:59:05,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-01 02:59:05,517 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-01 02:59:05,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 02:59:05,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 02:59:05,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 02:59:05,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 02:59:05,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 02:59:05,901 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 02:59:05,902 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2021-05-01 02:59:05,988 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee2f3079/4d3c77f560aa416d88c3a9574cec8a33/FLAG4ee07e90a [2021-05-01 02:59:06,375 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 02:59:06,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c [2021-05-01 02:59:06,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee2f3079/4d3c77f560aa416d88c3a9574cec8a33/FLAG4ee07e90a [2021-05-01 02:59:06,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bee2f3079/4d3c77f560aa416d88c3a9574cec8a33 [2021-05-01 02:59:06,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 02:59:06,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-01 02:59:06,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 02:59:06,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 02:59:06,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 02:59:06,796 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:06,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d612c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06, skipping insertion in model container [2021-05-01 02:59:06,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:06,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 02:59:06,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 02:59:06,937 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c[325,338] [2021-05-01 02:59:06,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 02:59:06,961 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 02:59:06,971 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c[325,338] [2021-05-01 02:59:06,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 02:59:06,991 INFO L208 MainTranslator]: Completed translation [2021-05-01 02:59:06,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06 WrapperNode [2021-05-01 02:59:06,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 02:59:06,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 02:59:06,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 02:59:06,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 02:59:07,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (1/1) ... [2021-05-01 02:59:07,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 02:59:07,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 02:59:07,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 02:59:07,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 02:59:07,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (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 [2021-05-01 02:59:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 02:59:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 02:59:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 02:59:07,183 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 02:59:07,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 02:59:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 02:59:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 02:59:07,184 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 02:59:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 02:59:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 02:59:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 02:59:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 02:59:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 02:59:07,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 02:59:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 02:59:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 02:59:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 02:59:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 02:59:07,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 02:59:07,464 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 02:59:07,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 02:59:07 BoogieIcfgContainer [2021-05-01 02:59:07,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 02:59:07,466 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-01 02:59:07,467 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-01 02:59:07,467 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-01 02:59:07,470 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 02:59:07" (1/1) ... [2021-05-01 02:59:07,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 02:59:07 BasicIcfg [2021-05-01 02:59:07,485 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-01 02:59:07,486 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 02:59:07,487 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 02:59:07,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 02:59:07,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 02:59:06" (1/4) ... [2021-05-01 02:59:07,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61213521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 02:59:07, skipping insertion in model container [2021-05-01 02:59:07,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 02:59:06" (2/4) ... [2021-05-01 02:59:07,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61213521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 02:59:07, skipping insertion in model container [2021-05-01 02:59:07,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 02:59:07" (3/4) ... [2021-05-01 02:59:07,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61213521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 02:59:07, skipping insertion in model container [2021-05-01 02:59:07,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 01.05 02:59:07" (4/4) ... [2021-05-01 02:59:07,492 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_01.cJordan [2021-05-01 02:59:07,497 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-01 02:59:07,501 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 02:59:07,516 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 02:59:07,534 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 02:59:07,534 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-01 02:59:07,534 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-01 02:59:07,535 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 02:59:07,535 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 02:59:07,535 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 02:59:07,535 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 02:59:07,535 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 02:59:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 02:59:07,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-01 02:59:07,553 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 02:59:07,554 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 02:59:07,557 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 02:59:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 02:59:07,562 INFO L82 PathProgramCache]: Analyzing trace with hash -487068095, now seen corresponding path program 1 times [2021-05-01 02:59:07,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 02:59:07,570 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357117074] [2021-05-01 02:59:07,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 02:59:07,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 02:59:07,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 02:59:07,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 02:59:07,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 02:59:07,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 02:59:07,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 02:59:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 02:59:07,893 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 02:59:07,894 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 02:59:07,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 02:59:07,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-01 02:59:07,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357117074] [2021-05-01 02:59:07,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357117074] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 02:59:07,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 02:59:07,899 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 02:59:07,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390164738] [2021-05-01 02:59:07,907 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 02:59:07,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-01 02:59:07,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 02:59:07,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 02:59:07,925 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 02:59:07,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 02:59:07,987 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-05-01 02:59:07,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 02:59:07,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-01 02:59:07,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 02:59:08,000 INFO L225 Difference]: With dead ends: 20 [2021-05-01 02:59:08,000 INFO L226 Difference]: Without dead ends: 13 [2021-05-01 02:59:08,001 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 02:59:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-01 02:59:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-01 02:59:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 02:59:08,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-01 02:59:08,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-01 02:59:08,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 02:59:08,030 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-01 02:59:08,030 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 02:59:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-01 02:59:08,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-01 02:59:08,031 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 02:59:08,031 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 02:59:08,032 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 02:59:08,032 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 02:59:08,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 02:59:08,034 INFO L82 PathProgramCache]: Analyzing trace with hash 2110189820, now seen corresponding path program 1 times [2021-05-01 02:59:08,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-01 02:59:08,035 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540625112] [2021-05-01 02:59:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 02:59:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 02:59:08,084 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 02:59:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 02:59:08,115 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 02:59:08,150 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-01 02:59:08,150 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 02:59:08,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 02:59:08,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 02:59:08 BasicIcfg [2021-05-01 02:59:08,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 02:59:08,187 INFO L168 Benchmark]: Toolchain (without parser) took 1399.37 ms. Allocated memory is still 206.6 MB. Free memory was 172.8 MB in the beginning and 146.9 MB in the end (delta: 26.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 8.0 GB. [2021-05-01 02:59:08,188 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 206.6 MB. Free memory is still 189.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 02:59:08,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.25 ms. Allocated memory is still 206.6 MB. Free memory was 172.6 MB in the beginning and 163.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-01 02:59:08,191 INFO L168 Benchmark]: Boogie Preprocessor took 50.65 ms. Allocated memory is still 206.6 MB. Free memory was 163.3 MB in the beginning and 162.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 02:59:08,192 INFO L168 Benchmark]: RCFGBuilder took 420.71 ms. Allocated memory is still 206.6 MB. Free memory was 161.9 MB in the beginning and 178.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-05-01 02:59:08,193 INFO L168 Benchmark]: IcfgTransformer took 18.44 ms. Allocated memory is still 206.6 MB. Free memory was 178.7 MB in the beginning and 177.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 02:59:08,194 INFO L168 Benchmark]: TraceAbstraction took 698.45 ms. Allocated memory is still 206.6 MB. Free memory was 177.0 MB in the beginning and 146.9 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-05-01 02:59:08,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 206.6 MB. Free memory is still 189.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 200.25 ms. Allocated memory is still 206.6 MB. Free memory was 172.6 MB in the beginning and 163.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.65 ms. Allocated memory is still 206.6 MB. Free memory was 163.3 MB in the beginning and 162.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 420.71 ms. Allocated memory is still 206.6 MB. Free memory was 161.9 MB in the beginning and 178.7 MB in the end (delta: -16.8 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * IcfgTransformer took 18.44 ms. Allocated memory is still 206.6 MB. Free memory was 178.7 MB in the beginning and 177.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 698.45 ms. Allocated memory is still 206.6 MB. Free memory was 177.0 MB in the beginning and 146.9 MB in the end (delta: 30.1 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x=__VERIFIER_nondet_int(); [L15] int x=__VERIFIER_nondet_int(); [L16] int *p = &x; VAL [p={3:0}, x={3:0}] [L18] EXPR \read(x) VAL [\read(x)=100, p={3:0}, x={3:0}] [L18] COND FALSE !(x<100) [L21] CALL __VERIFIER_assert(0) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 620.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.6ms, AutomataDifference: 94.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 18 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 16.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.4ms SsaConstructionTime, 90.7ms SatisfiabilityAnalysisTime, 144.8ms InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...